SV is special in this regards. I'm now realizing that's one of the main reasons I'll probably never move back home. Family, old friends, the culture of other cities will, in reality, put a bunch of shitty social pressure on you unless you're already rich and successful.
As a side note, I still bet most of this forum is against this ambitious personality, affirming at the end of the day that "there is more to life than your projects, go out and live, meet someone, fill out your social schedule, etc." That's certainly all wonderful, but it's the same social fabric that exists everywhere that's not Silicon Valley. Sam put his finger on something that is uniquely SV, and I think it's something to protect and cherish.
As another side note, I think it's kind of a shame SV is migrating to SF, because SF doesn't afford that protection. There are locals everywhere who despise the ambitious entrepreneur techie type. It's a bit of a struggle in subtle and sometimes unsubtle ways. It's obviously a face of the real world with class tension undertones and what not, but outside of maybe a few bubbles in the city which seem to me to all be in SoMa, it's just not a great environment if you are one of these ambitious personalities IMO. That and there are no late night hacker friendly cafes... why?