This writing by Luther is not
  appropriate for children.
  It is 2002 and the media is finally focusing on the problems of the
  Catholic Church's promotion of celibate priests. Luther raised the issue in
  1521. Luther claimed the requirement for celibacy was due to the perversion of
  the papacy. It has only taken the media 483 years to recognize what Luther
  wrote in some of his most vitriolic and graphic terms.
  Luther wrote that there is nothing holy about celibacy. Rather imposed
  celibacy is perversion and marriage is holy, because God blessed marriage.
  Faithfulness in marriage is true chastity.
  The introduction of celibacy was promoted by Pope Gregory VII in 1075 AD,
  who annulled the marriages of all priests. This madness was the result of the
  Catholic Church's flawed understanding of the "so-called" sacrament
  of ordination. They believe that ordination supposedly turns the priest into
  the equivalent of a transubstantiated communion wafer. Thus, the "holy
  priest" must have equally holy sons, who in turn inherit their father's
  office by divine rite. This is the inevitable direction of today's
  Hyper-Euro-Lutherans.
  Pope Gregory solved the problem by imposing celibacy, thus making all the
  priests' sons bastards. Within a hundred years, celibacy made the Pope the
  most powerful man in the world because he now had the right to appoint all
  priests, bishops, archbishops, and cardinals and thus control all church
  property.
  In answer to the Pope's perversion Luther wrote: "Answer to the
  Hyperchristian, Hyperspiritual, and Hyperlearned Book by Goat Emser in
  Leipzig-Including Some Thoughts Regarding His Companion, the Fool Murner"
  (1521) and other writing titled, "Against the Spiritual Estate of the
  Pope and The Bishops Falsely So Called" (1522).
  Luther explains in his Genesis commentary that the sin of homosexuality had
  not infected the general population in his day as it did in Sodom and
  Gomorrah. There was a problem with an occasional traveling merchant or solider
  but, of all orders of monks, the Carthusians of Luther's day were notorious
  for the problems with homosexuality.
  Luther writes as follows in his commentary about Genesis: Genesis 19: 4.
  But before they lay down, the men of the city, the men of Sodom, both young
  and old, all the people to the last man, surrounded the house; Genesis 19: 5.
  and they called to Lot: Where are the men who came go you tonight? Bring them
  out to us, that we may know them. "Moses proceeds with a description of a
  terrible sin. I for my part do not enjoy dealing with this passage, because so
  far the ears of the Germans are innocent of and uncontaminated by this
  monstrous depravity; for even though this disgrace, like other sins, has crept
  in through an ungodly soldier and a lewd merchant, still the rest of the
  people are unaware of what is being done in secret. The Carthusian monks
  deserve to be hated because they were the first to bring this terrible
  pollution into Germany from the monasteries of Italy. Of course, they were
  trained and educated in such a praiseworthy manner at Rome." Luther's
  Works, Volume 3: page 251
  
  Rather than a problem with homosexuality and pedophilia, in Luther's day,
  most of the priests kept whores, or their housekeepers, for some unknown
  reason, would conceive. Luther writes as follows in "Against the
  Spiritual Estate of the Pope and The Bishops Falsely So Called" (1522):
  "The papal bishops certainly have noble attributes which cost less
  effort. What are they? They are: to be ignorant; to avoid marriage and instead
  to have little whores, as many as they need; to have a silver cane carried
  after themselves; to put on a precious hat; to have a big tonsure; to grab
  many towns and much land within the diocese; to ride fine horses; to hold
  princely court; to keep "episcopal officials," LW
  39:255
  
  (Same Writing)
  "Adviser, advise well! Why do these whore-keepers dislike it when
  young men marry? No doubt because they lose their interest rates. For bishops
  receive the greater part of all their annual interest rates in almost all
  religious foundations from nothing but the priests' whores. Whoever wants to
  keep a little whore must give one guilder a year to the bishop. There is a
  proverb among them, 'Chaste priests are not liked by the bishop-indeed, they
  are his enemies.' Who else but a bishop could be a rich tradesman with women
  in this world? Who would blame the spiritual fathers for permitting whoredom
  for the sake of money, for selling living bodies of women and for prohibiting
  marriage, which does not yield money? People make their living in many ways. A
  merchant sells spices and linen, bishops sell the flesh of whores. How else
  could they make a living? To top it all, if a priest's maid stumbles over a
  dishpan and breaks in two, so that one part of her must be carried to baptism,
  the interest rate increases beyond the annual guilder. The bishop now has a
  reason to show his mercy by selling a mother to the poor priest. Blessed are
  the bellies that carry babies! But let the father worry about whether the
  breasts that are sucked are blessed too. The spiritual bishop has twice
  received his share from the belly. Are these not noble and dear female
  bellies, which have to be bought twice a year and which twice become pregnant
  with money for the spiritual lord!
  My dear, do not think this a bad reason to motivate these holy spiritual
  people to forbid the poor priests to marry. Should they not prefer whores to
  pious wives? A married woman is a shameful and harmful thing; she does not
  produce a single penny for the most reverend fathers and lords in God. Forgive
  me this joke, my dear man; it comes not from a joking heart but rather from
  one made anxious by these very senseless and blind masks. They are completely
  deprived of all sense, wit, and reason by God's wrath so that pigs, oxen, and
  asses are smarter than they are. Yet they are spiritual rulers, which is
  really punishing the world with fools and babes, as Isaiah says [Isa. 3:4]! Do
  you think they can cite reasons and arguments other than those cited, which
  are only greed and money? Even if they were cruder than crude asses they still
  could not say that God has prohibited marriage to the priests. Indeed, St.
  Paul instituted it for the priests when he said, 'A bishop should be the
  husband of one wife, keeping his children submissive and respectful,' I
  Timothy 3[:2, 4], and Titus 1[:6]. Do you hear this, you masks and gaping
  fools? I mean you who are wolves and who subject innocent blood to tyranny.
  Answer me: what would you like to say or what could you say about St. Paul's
  statement that a priest should have no more than one wife? How are you going
  to interpret 'one wife'? As a priest's whore whose belly you sell twice a
  year? St. Paul means only one wife, not two or more wives as was custom and
  law in the Old Testament. So if a priest wanted to obey this divine saying,
  who are you, you bloodthirsty masks, to prevent him? What is your argument?
  What do you say against it? Why do you elevate yourselves above God and his
  words? Should one worship you unlearned asses more than God?
  The pope prohibited it. What shall I say? My dear asses, if the pope
  commanded you not to honor your father and mother (which he really does) and
  destroyed all of God's commandments, should you not be the ones to oppose him,
  risking life and limb for the sake of God's word? Did you not read St. Peter's
  saying, Acts 4 [5:29], 'One must obey God rather than men'? Then you know that
  all human commandments, even if they were good and useful, are invalid and are
  no longer binding when they become unbearable. Your own fleshly law teaches
  you that. You can see that it is impossible for all priests to obey the
  accursed human law prohibiting marriage. Yet you great insatiable keepers of
  women still forcibly drive the poor souls into sin for the sake of your
  accursed greed. You can see and understand that they cannot obey the law, but
  [you say] they should obey it without any trouble. Oh, you murderers of souls!
  How shamefully you stain your hands with innocent blood! What an account you
  will have to render for such tyranny!
  But now it is indeed clear that these human commandments regarding the
  prohibition of clerical marriage are not human commandments but rather
  commandments of the devil. Three passages from St. Paul prove it. Two of them
  are the passages to Titus [Titus 1:6] and to Timothy [I Tim. 3:2] mentioned
  above, that a priest shall have only one wife. This is God's word and order,
  [spoken] through St. Paul. That is why whatever is commanded contrary to this
  or what is commanded or ordered differently must be the devil's work. For God
  does not speak against himself or give the lie to his mouth, as all Scripture
  and all reason must confess. But all reason must also confess that these papal
  laws are indeed contrary to Paul's divine order. Is all this not clear enough,
  you silent and blind masks? How can you chafe against that? Are your iron
  heads and crude minds not ashamed publicly to command and force everyone to
  keep the commandments of the devil contrary to divine order? The third passage
  is I Timothy 4[:1-3], 'Teachers will come with pretensions, teaching devilish
  doctrines. They will forbid marriage and enjoin abstinence from foods which
  God created.' See, he himself calls it devilish teaching to prohibit marriage.
  Nor does he speak here of the Tatians, as the liar of Dresden says.49 The
  Tatians did not prohibit marriage; rather, they condemned it as something
  sinful. But St. Peter speaks here of those who prohibit it rather than
  condemning it or regarding it as sinful, just as they prohibit food without
  regarding it as sinful. The pope is doing just that: he does not, like the
  Tatians, say that marriage is an evil or a sin; again, he does not consider
  meat, eggs, milk evil or sin. Instead, he prohibits them in order to make a
  pretense of spirituality, as St. Paul says here. Thus they speak through
  pretensions based on the devil's teaching." Luther's Works Vol. 39: pages
  289-292
  Note: The reference
"Luther's Works" and "LW" in all quotations and the body of
this article refer (via volume and page number(s)) to the American Edition of
Luther's Works, jointly published by Fortress Press and Concordia Publishing
House.