My theories:

1. First obviously not Japanese nor German , his English is too good. Sounds like typical, maybe 50 year oldish Californian, Bay Area, anti authoritarian hacker, neo techno utopist
2. Super smart — assuming he got 1M Bitcoins, which is currently worth 100B$ USD, fucking insane … that’s like half the wealth of Elon Musk ,,,

..

Prevent double spending problem ,,, typical use of trusted third party.  

Store value without trusted third party 

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BTC is also so innovative because there are so many uses that Satoshi probably didn’t think of,,, which makes BTC ,,, infinite?