I loved LA, but I don't feel that I could love the Bay Area the same way. There is not the same sense of adventure. LA has a lot of rough edges, but there is a strong culture of live and let live, and it's well accepted that people come from all over the place to chase all sorts of crazy dreams, and hey, good on you if you can make it work.
In contrast, San Francisco is actually, ime, fairly parochial in the same way that Boston is - and not in a good way. There is a way things are done. There are proper ways to think. In LA, there is much more a wide open attitude of "Well, that shit is crazy, but hey, it could be cool. It's a big world. Do your thing, man." which I always found to be invigorating. In the tech world, which is vaunted for its innovation (and rightly so), an orthodoxy seems to have quickly arisen. And certainly, socially, it's not as open or as welcoming of a place.