BBM In my experience (I have worked with child sex offenders for many years) such predators absolutely make a choice to commit their offences. A significant part of their offending is rationalising to themselves why such behaviour is acceptable while knowing full well that it is not acceptable in any way. IMO
I agree. They may be "sick" but rational. It is not the same as, say a personal with a specific mental illness that has no control. IMO