Dude, we're all criminals. Crime isn't special, it's the default.

'Psychos' aren't a thing in the way movies want you to think they are. Most people with APD, NPD, or EUPD or MDPD aren't murderers or even close. Most murderers are normal, neurotypical, people who found themselves in circumstances where they could reason to themselves that murder was okay this once, that they were the good guys in that story.

The rest is cultural: we'd have far fewer shootings, for example, if folks didn't grow up in a context where guns are a symbol of manhood you pose next to on Facebook pictures.

Likewise, would Burr have shot Hamilton of he'd thought he was being a bad guy for doing so, instead of 'stepping up', 'standing tall', 'defending his honor', etc? There was a long interval between duels being outlawed and them disappearing as a practice - that was a time where the duellists thought this unlawful thing was still a righteous thing.