I had a sort of bad experiences as a playwright early on, when directors were putting in huge concepts that I didn't intend, or they were stylizing something that was compromising the play, so I started to think like, "well if I'm going to fight against this, I should learn how to direct".
You can't run forever. There's only so much pavement that the road makers lay down. After a while, the highway quits going north and it just turns into sky. And you can't go anywhere in the sky unless you have a plane or some kind of rocket.
When I am directing, it is much, much, much, much, much different. I'm a much more practical person in the world, I show up on time, I am very rigorous about scheduling, and I am very focused. But when I'm writing I am just a big, irresponsible mess and I'm just impossible to get in touch with, and I don't spend time with friends.