I mean, you don’t have to commit war crimes. It’s just funny, especially when it means your colony dies in a spectacular and unintentional fashion.

If you prefer something more relaxed and less Geneva violating, your storyteller settings will let you configure the perfect game. I’ve personally played pacifist tree people who took an oath of nonviolence and charity, and had just as much fun as the tavern keeper run I did, and the sadistic vampire cult that uses humans as blood bags run.

Rimworld is all about finding what you enjoy, and doing that till you want to try something else.