I can understand the concept of having a sleep problem, but it's not genuine insomnia... if I don't have to get up until the afternoon for long periods of time, I will go to sleep around 2~3, and wake up normally around 10~11. Normal 8 hour sleep, rarely interrupted internally (although getting me up at 6am for something kills it for me), I feel perfectly fine (i.e. well-rested) when I wake up, and I go throughout my day without any issues related to sleep.
Another reason I know I don't have a classical case of insomnia is because I find it very easy to fall asleep in the morning hours, from about 3am to noon, without much difficulty, even if I'm not that tired (sometimes it's too easy...). An insomniac can't sleep at any hour of the day... Additionally, if my sleep gets cut short by having to wake up early, I'll find it easy to fall asleep from around 4~6 pm as well...