What you're seeing with Occupy Wall Street and the others are people who are unhappy and they're directing their unhappiness now toward Wall Street and toward those they think are doing too well in our society. ↗
I suppose directing on set is the most fun because it's a good crack and you feel you're on the battlefield whereas writing is a fairly solitary undertaking. ↗
It's not easy to strap yourself down to a desk and bash on a keyboard when you know you can direct lots of films, because directing films is fun and interactive and gregarious. Writing isn't. ↗