I write to entertain others. I like making people laugh, cry, wonder, fear, etc.
I also write to shut up the narrator. I’m sure you all know him very well. In my head he sounds a lot like a male version of me, and he will start narrating my stories when I am doing something important (i.e. about to take a test, go to bed, walking across a crosswalk). He just drops in and won’t be quiet and when I write it’s like I’ve put him to bed for a little while. But he always comes back, and I hope he always will.