***As a rule if you find abuse in the nonRC churches it’s usually heterosexual in nature, whereas in the RCC it’s usually homosexual. Whether this is because of the required celibacy, or a subculture that has developed within the clergy I’m not sure. The former probably is a casual factor in the latter.***
A number of homosexuals in the past have entered the priesthood as a result of understanding the sinfulness of the practice. This tips the scales somewhat.
But there was not sufficient supervision of some priests, who gave in to their desires. Also, some priests, sheltered in a religious world almost completely until finishing in seminary, may be somewhat less developed and unable to adjust as easily to the outside world. Sufficient supervision and guidance would have handled all but a handful of incidents.
The EO take a little bit different approach allowing their clergy to marry if they are going to stay at the parish level. I believe they have had a smaller incidence of this problem. I'm not sure what their history was in response to any incidences that may also have been a factor. Regrettably, it seems the hierarchy did a lot of covering things up early on.
As a I understand it there has been a real effort to try and weed out the problem at the seminary level, but that will probably take a generation.