Firm grasp of the obvious department:  

1)  2-4% of any human society is same sex attracted.

2)  Societal and religious factors impels these same sex attracted men to the celibate RCC priesthood.   Therefore the priesthood has always had numerous priests with a ss attracted orientation.

3)  Granted, not all ss attracted men will pursue minors.  But it makes sense that when you combine celibacy, ss attraction, a culture of trust and authority, and ample access to young boys, a significant percentage of ss attracted priest are going to act out with these boys.

4)  The higher ranks of the RCC are also going to have a high percentage of ss attracted authorities.  This has contributed to the culture of secrecy and deceit that perpetuated the sex abuse scandal.

5)  4 out of 5 abuse cases are that of priests molesting boys.   The incidents of priests abusing girls is rare.   

6)  Same sex orientation of priests and bishops has been the #1 factor in causing the church's sex scandal.