Part of what makes Thanos in Avengers: Infinity War so scary is that his “evil” plan makes a certain amount of rational sense: The greatest enemy of the Marvel Cinematic Universe isn’t Thanos; it’s overpopulation that will eventually lead to famine and ruin. By writing his own narrative, Thanos becomes the hero if he succeeds in wiping out half of the universe’s population from existence. Thanos isn’t a generic villain like Ultron or Steppenwolf who simply wants to destroy everything. He’s much more calculated, even logical in his approach, and more than 20,000 people in the real world agree with him enough to subscribe to a subreddit called /r/thanosdidnothingwrong. Even in moral philosophy, they’re probably not alone.
LINK: https://www.inverse.com/article/44383-avengers-infinity-war-thanos-ethics-philosophy