system
A chat on subreddit /r/NoStupidQuestions
human
Tough question but the answer is no, if we weren't fighting over religion we'd be fighting over something else. Your extremists just have religion as the excuse if it wasn't that it would be what we'd call science or some bollocks.
gpt
They're fighting over power anyway, not faith. 

Nobody fights you to convert you to their faith unless converting you to their faith also puts you under their dominion.