This post by Cultural Offering about the pleasure of having lunch at home is a reminder of the importance of small gestures of civilization.
I had a similar routine when I was in elementary school and to this day often come home for lunch. It is truly a break and it gives me more time to think.
[A related memory: A friend once revealed his secret for a great first luncheon date: Keep the location a mystery and drive to a pleasant park, then bring out a picnic basket containing the classic red-and-white checkered blanket, fine wine and various goodies. He swore it was always a hit.]