I'm on that giant asteroid thing at the end, its just I walked away from it about a year ago and have never gone back. I think it was because I was procrastinating from studying for my exams. I played it for 10 hours straight one day. I did the same with FF5: I got to Ex-Death's castle, and never came back to it. Infact, I don't think I finished FF10, I got to fighting Sin though...and my brother erased my FF9 save...
If I had the spare time i'd probably go back and do these things. Infact, I might start 9 again tonight.