I just assumed they would not want what we produce and just have the planet.

You’re very accustomed to your world and don’t want any discontinuity. Change is depressing because it reveals the impermanence of everything where rather pretend like it isn’t. Thats my reason :)

I bought a filet o fish recently after many years and the thing fit within the palm of my hand. It had exactly one half of a cheese slice since that was enough to cover the entire fish patty.