I do laundry on Saturday. Either Saturday or Sunday I run through and lay out my clothes for the week. With the hangers, I always have something ready to go in the morning and don't ever have the dilemma of having nothing clean to wear.
The other great advantage is that my husband can help get my daughter dressed without having to ask what I want her to wear. He just grabs the day's hanger and has everything he needs. No thought dressing... particularly useful if he hasn't had his coffee yet.