I read a book which really changed how i think about questions like this, i reccomend it- "The Lucifer Effect", nothing to do with god but about behavioural psychology. The point was that people have a tendency to dismiss terrible behaviour as "bad apples", like ummm and the priesthood are now. The point is that that doesn't hold up, history and experiments show that if you set up the wrong sort of social system then bad behaviour INEVITABLY follows. To reconcile that with the idea of "bad apples" you'd have to admit that MOST people are "bad apples" because the bad bahaviour always comes.
A social system of no sex and absolute power over/prolonged private contact with a wide range of people from adults to children sounds like an absolute nightmare, and in such a terrible system then history shows that bad behaviour inevitably follows, it's not a case of bad apples.
FInally, to blame inbuilt sexuality (pedophiles or homosexuals) doesn't really make sense, since for a start many of these cases havfe been heterosexual, too many to ignore. Finally, if you look at history and the studies on the subject, whilst there is probably a genetic comoponent to sexual preferences there is also undoubtedly an environmental component and somewhat of the ability to change preferences. People have gay experiences in prison for example, and as an example of the environmental effect second children are much more likely to be gay than firstborns.