I seldom go to bed in time because I hate to lay there trying to get asleep. Wanting to make more use of my day also doesn't help; I don't get home before 7:30pm, and I don't want to just dine and go to bed...
Then comes the morning and I just can't wake up, even after 9, 10hs. I put my alarm clock far away from my bed because I used to just turn it off and keep sleeping. It doesn't help that much though: I "wake up", walk to it, turn it off and go back to under my sheets. "Wake up" as in I'm walking but I'm not totally conscious. It's like I'm drunk, I'll always find a nonsense reason to justify going back to bed, like "hell, I need to go back to my bed now, or it will get too light and float away"