Quote: "The world could never support eternal life, eventually there would be a need for Thanos."
Not if we'd keep on breeding as we do indeed, but I dream of a world, where there's only death by accidents, and perhaps after living for 1000 years.
A world where, on solar power in deserts, factory-farms are producing everything we need 24/7 by automation, from food, to clothes, to houses etc. People could focus on really helping each other, play & create games, music, art, evolving our intellect AND making love-not war, for all resources would be abundant, no money needed.
I think if we do not annihilate ourselves, this eventually is inevitable.
May not be pretty at first for powers that be will try to stretch their reign of power, but this can only last max 150 years, perhaps much sooner, given the exponential pace of technological developments.
We'd might need additional planets though, but if living that long, and seeing how many technological advances we've made in the last 200 years, that should be solvable.
But perhaps I'm being too positive and people are not ready yet.