Thanos’ quest for the Infinity Stones comes to a head in Avengers: Infinity War, but the movie also finally gives us the reason why the Mad Titan has spent six years’ worth of post-credits teasers gathering such vast cosmic power. And, perhaps surprisingly, those motivations have deep roots in the comics.
Source: Gizmodo – Thanos’ Motivations in Avengers: Infinity War Have Much Stronger Comic Connections Than You Think