Why invader Zim isnt a bad guy

Okay so I really love invader Zim and I dont think Zim is a bad character. The reason he wants to take over the earth is because he sees humans as beneath him. This is similar to how humans conquered animals because we were superior. Second, specific actions. He is mean to Dib, but his first impression of him was Dib trying to capture him and taunting him about an autopsy(before he even knew his intentions). In best-selling friend, he rips out a kids eyes and replaces them, but from Zims perspective this kid was a serious threat, and it's shown in Irkens that their eyes can just fall out. In the dark harvest, since Irkens organs dont work the way humans do, and Zim specifically asked if he would mind if he was missing some, its likely he didn't know the damage of doing that and just wanted to avoid getting caught. If you have any other specific actions or something that could prove me wrong let me know, I am open to having my mind changed ^_^