Are you in SF? If not, it would be hard to explain how much of an impact geography can have on your success in life.
> The third thing I would notice is that it helps your career (again, speaking from a "code monkey" perspective here), less than you'd think. What is going to come out of the chance encounters at meetups and events?
I'm unsure if you're being facetious - billionaires have been made of people who happened to be at the right place at the right time and you don't get there by staying at home. I mention the billionaires because you can look these up - I'm pretty sure there's a far larger volume of people who made far less.
If you discount the value of chance encounters, you've not yet had the opportunity to realize how random success is. You increase your chances by increasing your chances at random success. This is all probability theory and provable mathematically.