There is no point in asking this question though. We can only speculate because we have yet to confirm is actual ID.
My point is that we should by pass that step, and assume death. If he returns it will be cooler that way.
Now that Bitcoin is becoming a world-wide phenomenon I highly doubt he will ever return judging by how secretive and private he was when used to be active in the community. He was not a person who craved attention or admiration from others. He had a job to do. It does not surprise me that he left when Bitcoin became a self-sustaining community of enthusiasts and developers, his job was complete at that point. I like to imagine he is off somewhere else doing good in the world, like feeding ducks, at least if he's not been hit by a bus I mean.
I found some of his posts on another site, then i pieced it together with an uncanny near death experience event this year...1 BTC I will reveal to you >>satoshi<< LOL