What does it matter if you or I do or do not feel sympathy
We have a very serious issue that we seem unable to deal with that is child sexual abuse. if in anyway it can be prevented by understanding why some men/women feel this way and they are not constantly demonised and they can get support to manage their feelings (self loathing is harmful often not only to the person who feels it) it is more likely to be successful
There is never going to be a time when people openly admit to something so heinous but we should be moving onto a time when we deal with the causes and those that want support can get it
One of my tutors who had worked in the prison service told us that she was shocked at how many men were in prison were pedophiles not that they has acted upon it but had gone down a road of self destruction through their hatred of themselves some had been abused themselves (the wanting to act out the pain felt is not unusual and very complex to deal with but it is never ever an excuse) now if they were only harming themselves and their lives what does it matter some might say but it's unlikely they are
It's complex as you pointed out many are married or have partners and have children themselves and that's the danger we don't know who but we should not longer bury our heads in the sand it doesn't protect children and that is who ultimately we want to protect