Here's my take on it. Suppose you are a pedophile, and you intend to molest children. How will you go about it? My guess is that you would try to secure a position where people trust you, and one where you can be with children. A priest obviously has high respect because of the religious nature of the job, and you are in contact with children. Besides, if you're a pedophile and don't feel attracted to women or other adults, being a priest will “explain” why you never date and never have a partner. People will think you're a good priest, when in fact, you just don't lust after adults. No one will ask you nosey questions about your personal life because everyone will assume you don't have a relationship of any kind, and that if you had, being a priest, you'd not talk of it. Thus, the position of a priest seems ideal for a pedophile.