The problem for me (at least with Chic-fil-a) is that I am really only eating fast food ever on Saturday or Sundays. Those are the days I have off and the days I am most likely to be traveling (by car or other) and when I would be mostly likely to indulge in fast food. Probably about 2/3 of the times I would have gone to Chic-fil-A I could not due to the Sunday closure.