Do you think Osama Bin Laden still roams this earth?
I would say he's been dead for some time now. He hasn't made a video tape in years, and although they claim his last audio tape was legit, I don't buy it. It's in Al Quaeda's, and your governments best interests that he remain "Alive" to you people, as a sort of boogieman, although few people seem to even remember who he is, and at least we've stopped blaming 9/11 for just about everything short of our bowel movements.
And also I had no idea that the unit in the CIA dedicated to finding him (Set up under Clinton I might add) was disbanded in 2005