Boston is doing pretty well and many things started in Boston such as YC, Facebook, Dropbox, etc. Boston is small and already expensive. Plus the weather. I als

Boston is doing pretty well and many things started in Boston such as YC, Facebook, Dropbox, etc. Boston is small and already expensive. Plus the weather. I also think it doesn't have a lot to offer for single people. It has much more to offer for families. Boston is also more diverse in terms of opportunities. If you're a researcher or biologist let's say, you are more likely to find a good job in Boston than SF.