It's no secret what's going on in baseball. At least half the players are using steroids.
I think if you play a character that is fearless, then it's boring. I think that's what was so incredible about Harrison Ford, is that he always seemed like he was never going to survive it, he's always scared, and yet he always does survive it somehow.
Children are unpredictable. You never know what inconsistency they're going to catch you in next.