BLUF: There is no option between human civilizations for ’we’ll each go to our little territories and stay there’. That’s not how humans work or ever have. Population pressure; desire for goods; desire for a certain land; conviction of one’s superior civilization, will keep us fighting and trying to expand (and btw, that last applies to ALL human civilizations. Yes, Islam believes they’re superior to and more powerful than the west. They have Allah on their side, after all.) Your choice is never "let’s all live in harmony." Your choice is colonize or be colonized. Think carefully of where you’d rather live, and which mind sets and conditions you’re willing to encourage.And stop mouthing pieties about "massacres" when someone fights in self defense. Western Civilization is not always the winner, and will not always be the winner.
The fatal oikophobia you’ve been taught is the worm gnawing at the heart of the civilization that’s lifted most humans out of poverty. Examine carefully how you’d like to live before your throw your weight behind the supposed victims. They’re just another set of aggressors. And if you wouldn’t like to live under their rules, that’s not the side you should be fighting on.
No humans are angels. Some are just more accomplished warriors than others. That doesn’t make them bad. It all depends on what you’re fighting for.