I totally understand. I "retired" last summer, but I continue to work about 50%, mostly at a new place that needs my help. I like what I do. Anyway, gaming/reading/etc. are fine and dandy, but not something I want to do 24/7.
The only thing I don't quite get about Brin is going back to Google. Since he doesn't need the money, why not support open source AI projects?
Because it’s what he knows.
People often like doing the things they’re good at and not necessarily because they’re interesting.
Because in google he can be a “dictator”, while he wouldn’t be in open source.
Probably because he knows the people and frankly, the team that's getting paid billions collectively are the top talent.
If I already know a great team, one where I know all the people involved and they listen to me. Why would I make a new team?