If it’s worth saying, but not worth its own post, then it goes here.
Notes for future OT posters:
Check if there is an active Open Thread before posting a new one (use search for Open Thread ).
Monthly open threads seem to get lost and maybe we should switch to fortnightly.
what accomplishments are you celebrating from the last month?
To be a little cynical, Berkeley has the community-hub advantage of imposing a strong selection effect: it's far from everything that isn't the West Coast, it's hideously expensive, and as a city it isn't all that great -- I know New Yorkers who tried to move out there and came back with a litany of horror stories to rival those of my friends in Baltimore. So only the hardcore (or people competent enough to land a SF tech industry job) move out there.
The East Coast, on the other hand, has a lot of nice cities and, for most Americans, isn't so far away. I moved to Boston from a location that's pretty far away in east-of-the-Appalachian-range terms, but I could still take a day trip (by plane) to visit my parents, which I couldn't do if I lived in Berkeley.
As much as I like Boston, I think there's an important advantage DC has over it: where Boston has students, DC has people who opted to take safe, cushy government jobs and now have a lot of intellectual energy and no channel for it. (It also has the advantage of being Where The Government Is, which might be important at some point, for some purposes or other.) And, while it's a worse city than Boston in many respects, there's more to do -- if I lived in DC, I'd try to put together a group for going to free concerts (of which there are many in DC) and so on, but I don't know of anything like that here.