WHAT DO YOU THINK ABOUT THANOS

Thanos saw his planet destroyed in front of him. He wants to save the universe from mass destruction by balancing the universe. He believes in destiny he believes his destiny has chosen him to do this work. He was not there to kill the Avengers. He just wanted to collect all the stones of the Infinite and let their destinies decide their future. As we have seen he has had many chances to kill them, he can easily kill them all, but he did not.