I don't know about living there, but S.F. is one of my favorite places to visit. There is so much to see and do, and there is a really diverse crowd of people there. Of course there are a few mean people, but by and large everyone I've met from there (and surrounding areas of the bay) have been really nice. I party with a lot of people from the bay area and they've all been really great! My aunt owns a HUGE house in S.F. and my dad grew up in Valejo (some parts of Valejo are nice, and some are really really bad!) and went to college in Hayward. He said that when he was there, it was party central lol and from what I've seen, it isn't any different today