sorry. i didn't mean to diminish the harm this man has caused. *especially* the suffering of his children!
however, i must disagree with the rest of your point:
the chain of evil choices leading to this tragedy is not a thing that is beyond comprehension; nor is he or his "pathetic" crisis something "not worth thinking about".
to settle for condemning individual perpetrators after the fact, throws no wrenches into the mechanisms which produce abusers - whatever those turn out to be