It is that innate desire for humans to uncover something that looks like a mystery. It is just like deep sea exploration, space exploration and all. And the fact is that as long as the identity of Satoshi remains hidden, there would be a person or group of persons out there who would make it their life's mission to uncover this mystery, with or without the help of any government agency. And they will not give up unless there is a reason beyond any doubt for them to. As for me, I don't care who he is. He's created something phenomena and I am appreciative of that and will use it to the best of what it was meant to do.