This reminds me of that old Seinfeld joke....there are 2 people living inside you, morning guy, and night guy. Morning guy HATES night guy!!!!!
I don't have insomnia, but I have always hated mornings, ever since I was a kid. I was lucky enough to get a job that allows for alternate hours. I used to work 2p-10p, and would usually go to sleep around 4am. Now I work 12:30p-8:30p, so I really should go to bed earlier, but I often end up staying up just as late. It's not awful because I can still generally get about 6 hours of sleep, but after a few days of that you get really tired. So some nights I crash right when I get home.
I'm not terribly happy with my cycle, but having to work at like 8am would be COMPLETE DEATH for me!