No, he is sipping topic punch on his own island outside his mansion on some beach somewhere enjoying the free life of no woe or worry and endless money and the ability to have almost anything. There is no reason to come back, he has already helped the world and is already a huge success. Noone needs fame when you already filthy unspeakably rich. Some people say what if he lost his private keys? I think he can just start a new currency and get the money back that way. Maybe not as much but still plenty for one single man.