The ongoing scandal

I guess I understand how some priests could abuse/molest/rape their young parishioners. Priests are people, and people sometimes do terrible things.

And I guess I understand why bishops and cardinals and popes would want to cover up that kind of behavior. They were trying to protect their institution, which they see as overwhelmingly good, from embarrassment and legal liability caused by a tiny minority of its people.

And I guess I understand how the bishops might have thought that sending miscreants off to spiritual/psychological counseling would "cure" them. Hey, I don't know; maybe such treatment did cure some of the abusers.

What I don't understand is why a bishop would repeatedly move a rapist/abuser from one parish to another where he could start his crimes all over again. Even assuming that the bishop didn't want to "defrock" the bad guy, there are lots of jobs the bad guy could have been given that would not involve interaction with still more young people. So why in the world did some bishops simply move the rapists to other parishes? The only answer I can come up with is that those bishops just didn't think that raping/abusing young people was such a big deal. That can't be the answer, can it? Can it?