Generally speaking, say you had nothing to do, nothing to stay up late for, and nothing to wake up for..would it be easier to stay up until say, 6am, or wake up at 6am (for those like me that wake up ~10, adjust to earlier if need be)?
I'm a night owl, its easy to stay up late, but its hard to find the motivation to wake up. Even in school, if I was up late cramming or doing some fast typing, I had to sit there and finish it, or else the morning stuff would go right through my head or my writing would be incoherent.
Definitely easier to stay up. Once I'm up, it's easier to stay awake than it is to actually get up. Also, I find that no matter what time I set my alarm for, as long as an alarm is set and it goes off, it's too early, even if I go to bed at 2 and set my alarm for noon, it's too early.
I loved working nights sooooo much more than days. It was great to just stay up late, not have to get up early, it was cooler outside, no traffic, easy to go to the grocery store. Getting up for an 8am class or work is my hell.