I actually rather like the middle of the night. I quite often find myself vacuuming, putting on washing or ironing in the middle of the night or maybe reading for a couple of hours. (when I am home alone, of course.)
I used to think I was really weird until I saw a documentary that was about two sleeping stages being more normal through the ages and industrialisation has changed it all and is the reason why humans have sleep problems now. It was very interesting.