Having read the thread, it seems to me that one perhaps needs to look at the actual reason WHY people enter into a life which they know demands celibacy. Many undoubtedly, will enter from a strong sense of belief, whilst for others it may be a way to escape from "the world" and pressures that they feel unable to cope with, especially in terms of relationships. Perhaps some, detecting tendencies in themselves they sense are wrong, think that it might help them to avoid temptation, only in the case of the paedophile then finding they are exposed to greater temptation, given the teaching role of religion.
One only needs to look at the some of the beliefs about ritual cleansing in religions to see that it may be the source of some priests, nuns and holy people from other religions getting carried away in their wish to "cleanse from sin" young people they come across and end up getting hooked on the violence of it. It is a good justification to self, if it is in the name of the religion and "saving the soul of the young sinner, even if you are having a good time doing it.
I don't think any of us know the answers, except to suspect that the causes are many and varied and link personal history, personality, beliefs, temptations and environment amongst many factors. Personally, I think that to blame celibacy, per se, is too simple.