User blog comment:I'm Blue daba dee daba die/Pure Good Removal: Thor Odinson from the Marvel Cinematic Universe/@comment-2059440-20190913032320

he promised Thanos that he would kill him, for one thing, which is vengeance - albeit justified.. he also tortured Thanos instead of killing him outright - even Thanos commented ("should of aimed for the head").

Also a major trait of all Thors (even the movie ones) is that he can be quite arrogant, sometimes downright mean.. let's not forget he was cast down by Odin to learn to humble himself, which he semi-succeeded in but he's certainly not "pure of heart".