Part of the idea of writing daily is to do it early in the day as one of the first thoughtful things I do after waking up.
By having an auto programmed response after the alarm goes off–which may include putting in warm clothes to brave the chilly house–I hope to avoid making unnecessary decisions.
Experiences long ago (before I started wasting thought on useless things (or before I realized there were other options)) showed me I was much better off going through write processes before focusing on things demanding actual thought–before learning or creating.