"The preacher of chastity is a public incitement to anti-nature. Contempt for sexuality, making it unclean with the concept of 'uncleanliness', these are the real sins against the holy spirit of life." - Nietzsche, The Anti-Christ
Celibacy is the most perverted fetish possible. All other fetishes at least resemble the natural sex drive, but celibates spurn our god-given libido for philosophical gratification. It's as great a sin as selling your parents out to the Cheka to prove your loyalty to communism.