Nope, happens to me all the time. I ALWAYS wake up around 8 or 9, and 9 is sleeping in for me. I know I can't fall back asleep so I just get up, no matter how late I go to sleep.
One thing that's weird about me is that, in the past decade, I have been unable to get into any hip-hop or rap music that isn't at least partly in a language other than English.