I think every film actor secretly wants to be a rock star as well; just that part of the job which requires the extrovert in you. Even if you've become an actor because it's your way of hiding in plain sight, there's still part of you which has that craving.
You know, I think when I reflect on it, I think there's certainly a sense of history. When you have ambitions to play this game, you want to be one of the best ever, and you want to play so well and be so effective that you want people to remember your name 100 years from now.