The whole deal is the natural progression of putting the priests in an unnatural situation. Even though Paul opined that celibacy was desirable, he made it clear that it was his own opinion and not part of the divine message being fed to him by the Holy Spirit.
And why would a homosexual become a priest? For the same reason he would become a summer camp activities director, a wrestling coach, a youth minister, a Boy Scout leader, a juvenile drug counselor, a sports league coordinator: because he's attracted to boys, and that's where he can find them.
Like the old story about Willie Sutton:
Reporter: "Willie, why do you rob banks?"This article from Free Dominion (Canadian ally of Free Republic) gives a research-based perspective (Link) that should interest you.Sutton: "Because that's where the money is."