Osama bin laden......true or not?

okay as 'crazy' as it sounds i believe that osama bin laden died a few years back. and i think the us government have kept his image alive just to try and justify all the attacks that have taken place which were started by the us goverment themselves. everything that has happened has been linked to osama as a coverup all or the horrible things they did and also for a reason to start hatred and war. I have also read that osama bin laden was a cia member called tim osman and that he is going undercover making all those confession videos to make muslims look bad. But as i said earlier i think ' osama bin laden' died ages ago and obama has agreed to confirm this as part of him winning the election and getting more votes. does anybody agree with me? after all this is my opinion and i am fifteen so if you have other things you think then feel free to tell me.