If you had powers like Superman, do you think you could maintain a positive and friendly personality? Would you be able to avoid a superiority complex?

I was just wondering if it would be possible to be him, with all of his abilities, and not get to where you felt superior and wanted to take over the world. How would you maintain friendships, and relationships, if everyone else was weak, could get sick, etc, while you just continue on for eons, with all of your powers. Is that what makes him a hero?