because i've looked into it many times
after i played rust and dayz for years, i stopped even confronting other players and just immediately attacked them
i benefit from their resources and i don't run the risk of having to trust or exchange with them
Need water because you're thirsty? Europa and Titan got you covered. Raw materials for construction? Asteroids, moons, or Mars won't put up a fight. Oxygen because maybe they breathe that stuff too and are running out? Europa's got that too. Hydrogen to fuel fusion reactions? We have three gas giants literally made of that stuff. Why the forget would they go to Earth for resources when all these places exist within our system? Earth is only unique because it can harbor life, unless aliens specifically want livestock they can stop at any other planet in the solar system to get what they want, and they won't need to worry about the moral dilemma of performing genocide. Hell, they wouldn't even have to stop by our solar system, there's bound to be these resources located around other stars as well, perhaps even in greater amounts.
but i mean whatever that's just how space works, keep going with your flimsy brown townogies about how paranoid you are when you play video games