There are some good questions here. Why can't a conflict be between more-or-less decent people who agree on a purpose, but differ on method?
https://aeon.co/essays/why-is-pop-culture-obsessed-with-battles-between-good-and-evil
@starbreaker
Incidentally those conflicts are the most frequent and often the bloodiest. Minor differences create wide divisions.
@starbreaker
In real life, too.