Everybody loves Thanos these days. 'Infinity War' brought this character to a whole new group of fans who hadn't read about him in the comic books. The thing is, in the movie he's somewhat sympathetic. His plan, although destructive, is for the good of the universe. That's not the case in the comic books. In the comic books he's just a dickhead. He tries to destroy humanity with the power of a Cube so he can impress Death and get with her. Even worse, he fails and she disses him.
The only reason he goes for the Infinity Gauntlet is because he needs to get some street cred back after messing things up with the cube. In the end he's defeated and killed, but Death comes through for him and resurrects him. I knew she'd come around.