I would argue not only that early rising is totally unnatural but also that lying in bed half awake - sleep researchers call this state "hypnagogic" - is positively beneficial to health and happiness. A good morning doze of half an hour or more can, for example, help you to prepare mentally for the problems and tasks ahead.
I wish I could wake up naturally, when I feel rested, but my 2 y.o. Won’t let me. Also, my wife is nuts and thinks it’s lazy to sleep past 7. I want to wake up at 9... but have to be up around 5:30-6 every day. Thing is, I’m self-employed and have nowhere to be, no one to answer to. What went wrong...
--The Virtue Of Idleness By Tom Hodgkinson