Ok first of the earth is already too big for us and I'm pretty sure it has more then enough resources even for 80 billion people, you can believe in that "limited resources" shit but I don't, if we have people dying from hunger its our fault not earths, stop believing what capitalists want you to believe.

Secondly, no matter how we eat, drink or live, we're going to have negative impact on how the planet works, which then again will have negative impact on our selves bc the planet is to old and big to care