No, I moved out when I went to college at age 18. I haven't lived with them longer than maybe 2 months at a time since going to college. I suppose I officially moved out when I turned 20 and got my first apartment. Since then I haven't stayed with them longer than 1 month at any given time. EDIT: Also, after having my own apartment, I never "moved" home in that I never brought all my belongs back to their house.
Provided I can get a job after grad school, I shouldn't need to move back in with them.
Ryan