Do you hate supergirl?? Or just the bad aliens. I mean that’s a really big statement by saying you don’t think they deserve rights. That’s kinda like saying immigrants don’t deserve rights. I’m not saying there the same I’m just making a comparison.
Earth is habitable, and most didn't chose to come to Earth, they just ended up there. I'm sure there are plenty of alien refugees on other planets, but we don't see those planets.