Satoshi was also pretty strenuous in tech support in telling people to never delete wallets.

Serious possibility; Satoshi is a modern Nicolas Bourbaki and the key can only be recovered via a majority split key submission.

> Serious question... Why wouldn't Satoshi have it?

Block zero was in all likelihood "mined" by Satoshi. As a matter of fact, that specific block might even have been created by hand.

Mostly because I think that the person(s) behind the name just plain lost the wallet at some point.

There's also the myth and legend of The Satoshi Wallet. People have software checking it automatically and _any_ transfers out would be stuff of legends immediately. Any major transfers would cause panic - the founder is leaving, what's happening?!