Completely different speeds.
I love LA for many of the same reasons you do -- cheap, good food, rent prices are lower than the Bay, the weather, and the women really try hard to look like a Kardashian out there. I also love that there always seems to be more of a younger crowd in bars and around the city in general.
That being said, I love that the Bay is so laid back in every sense. You brought up the techies with their microaggressions, but I still sense that there's more harmony in the Bay than in LA. There's a pronounced tension in LA; maybe it's the heat or rush hour traffic, but I also noticed that the different ethnic groups generally stay to themselves and are extensively ignorant of other races. Some of the most outlandish shyt I've heard about Black people have come from Mexicans and Asians from Los Angeles.
I don't like how gated up everything is in LA, like everyone is expecting to get robbed down there. My boy, for example, lives in a gated complex of 3 houses. It's not a gated community, it's just literally a row of 3 houses gated with walls around it, in the middle of the block, neighbors on either side essentially cut off. That shyt just seems off to me, that ain't no neighborhood.
It's a very different culture. Rest assured though, it's not like going from a rural city to a sprawling metropolis -- every amenity you expect from a world class city can be enjoyed in the Bay.
I do just wish the women were finer in the bay.