By default and, to a certain degree, necessity, not necessarily by conviction. And many are just POGs for life too (they help but at least they didn’t go as far as killing). Let’s be fair. I do believe that thinking about what you do is a moral imperative (THE moral imperative, perhaps), so they’re still at fault even if their hands are ‘clean’. And often they come back all mentally fucked up too, which shows an overall lack of foresight more than a desire to be evil.

Basically, they’re stupid folk, not Kissingers, cut them some slack. They might repent and change their ideas/ways…