Eh, politics would suck less if people didn't take such extreme stances on things, put partisanship aside, attempted to understand the perspective of the other side, and approached things with nuance. It's not always easy, and it's probably the less attractive choice if you just wanna be lazy/a dick about it, but it is doable. Of course, one's desire to do such a thing in the face of people who constantly take the easy route understandably lessens over time.

Aside from the "mental health issues" aspect that Pete hit on, I suppose the most obvious ones are money + property, high intelligence/critical thinking/problem solving skills, and the ability to master, like, every martial arts in existence.

Then again, why would you want to be Batman? Pete's take probably represents how a lot of people would perceive you, regardless of whether you were responsible for a bunch of Robins dying, etc., or not. You'd probably a really rich member of one of those Super Hero guilds, or whatever they are, and I'm pretty sure the consensus is that those people are super nerdy and lame.