Just remember that some sex offenses are an 18 yr old dating a 17 yr old, or a divorced mom who claims falsely out of revenge that her ex touched the kids (one guy got arrested for putting a prescription medicated cream on his daughter's private parts), or a guy urinating in the bushes (a friend of mine served on a trial in such a case).
On the other hand, remember that sex crimes have the WORST recitivism rate of just about any other crime. It's something they simply cannot stop themselves from doing.