Sanguinia posted:

Its this. The whole argument Thanos makes is that when he's done this experiment manually on various planets the long-term result was a glorious success that proves him right. The fact that his logic doesn't hold up just makes him like every other Malthusian. He cherry picks the data that supports his proposition because he's an arrogant narcissist who couldn't possibly be wrong.

You know, like Tony did with Ultron. That's why they're foils for each other in Infinity War and Tony's journey through the whole Saga parallels Thanos' own implied journey when he shares his backstory.

EDIT: Also in Endgame he says this time he'll just rewrite the entire universe to fit in his exact perfection vision, so it's not like that wasn't on the table. It just would have been a less satisfying victory than the "grateful universe," fixing itself because of his one action.