We are forcing people to change their lifestyles, to resettle their homes, and to dispose their beliefs, telling them "we are doing you a big favor" as if we are righteous to do so.

I would also point out that humans are a part of the natural universe. One could reasonably argue that everything and anything that we do is "natural".

Of course not; if you suggested it they would rightly stare, bemused, and say: "Isn't that a kids' book?"