Why do I STILL do NaNoWriMo?

"Why do you still do NaNoWriMo?" people ask. "Why are you actually here?" It's a legitimate question, and I guess people have a right to wonder."Hey," they say, and go on with any combination of, "you write double the NaNo word quota each month, you're a published writer, you've got a successful eight-book series under your belt, your own stuff is coming along, and you even do work-for-hire, so,