It's not really a question of ego for me: I want my internal model of the world to be as close to the objective truth as possible. I'm happy if someone helps me improve it. I guess I'm a bit weird?
Debating to "prove" your position is not really debating IMO, that's just arguing. Your ego shouldn't be at stake, your arguments should.
Also, Hollywood? What is that, some kind of forest? ;)