I can only hope and pray.
The evidence is pretty strong.
OBL's stock and trade was to release regular videos and audio tapes mocking the USA and rubbing our faces in the fact that he was still around.
You don't hear those any more. The last attempt from Al Qaeda was a pathetic edit job which tried to give the appearance that he was there.
OBL is either dead or very, very sick. Either way, he's not running anything.