People often ask me why I don't write before work instead of writing at night. I could just get up early, they say. As if that's so much better than staying up late.
But this is why. Note the time stamp. It is 5:15 am as I write this. I'm usually abed on work nights by 3 am, but have been unavoidably detained by a scene that was flowing too well to stop in the midst of.
It's easier to go without sleep than it is to call in to work and explain why one will be over two hours late. And that is why I write after work.