- Roman conquerors,
- Serbian conquerors,
- Holy Land crusades,
- Nazi holocaust..
The list goes on and on. And it always comes down to the same reasons. People wanting to exert power over other people, "liberating" them. The church in particular is especially known for that. Most wars were fought over "my god is the one true god and you have to worship him".
Does it ever stop? How can you know that those people will agree with you about what's best for them? How can you know they want to be a part of society at all?
I'm all for giving them a choice, but forcing them to live the way we think is best for them, e.g. making them give up their way of living entirely to live in brick and mortar houses and having to work factory jobs, isn't helping, it's exerting power and destroying a culture.