For me, the movies I like are all independent. And getting an independent feature made, it's like you get down to the selling organs part, and it just loses some of its luster.
And if you have great writing, it's really easy, but if it's not so great and you have to work a little harder, I could tell where the work needed to be done but comedy is just fun.
It's not a terribly original thing to say, but I love Raymond Carver. For one thing, he's fun to read out loud.