I think the same way about theatre, you go out there and you are creating a world for a moment that can actually have a real impact on people, present some kind of story that gives you something to think about when you walk away, feeling enriched - if it works out well.
Democrats were quick to point out that President Bush's budget creates a 1 trillion dollar deficit. The White House quickly responded with 'Hey, look over there, it's Saddam Hussein.'