The logic of the host country is that they can quash any rebellion through the extreme application of violence against the rebels. It works out sometime for them, and other times it doesn’t.

Either way a lot of people end up dead on both sides. They are the poor, children, colonists, and indigenous peoples. Importantly, they are not members of the aristocracy, so no lessons are ever learned by elites as to why empire building is a bad idea.

With that logic we would all still be living on the same continent and would never have spread across the Earth to begin with.

I mean, I think it’s widely held that humans coming down from trees was a bad idea and should have never happened.

You may notice the people who say that are hypocrites who believe their existence is legitimate and worthy of defending. Hint: they don't actually believe that.

They’re referencing a bit from Hitchhiker’s Guide to the Galaxy.

That's happened to me twice in the past week. Time to re-read it.

Trees? Hah! We never should have crawled out of the ocean.