Also a lot of people hanging on to their property values as their entire nest egg.
There is a vast difference between American liberals and left-wing politics.
They aren't the same (thank god - the original Bolsheviks were psychotics!) but plenty of resemblences. There is still the absurd supply-and-demand denialism common to both the area and the self-proclaimed left-wing. Then there is the whole "fight new higher density housing as gentrification" making everyone worse off as the supply doesn't rise but rents do anyway.
Extreme-left wingers in my view stand head to head with extreme-right wingers. These people are the cancer of the society IMO.
It's less that the extremes are on two opposite ends, but just two flavors of the right of the economic ideology spectrum who share a goal of not wanting to be taxed and don't wish to fund/provide public services.
"Extreme" left used to be about worker rights, universal health care, sheltering the poor, or reducing global strife (say the anti-war movements of the 60s/70s).
Bay Area left is now about grievance politics, defunding the police, being anti-tech (represented as being anti-gentrification, or anti-billionaire, but the deeper issue is usually anti-tech, which is seen as what made living in SF/Oakland unaffordable, as opposed to say, obstructionism), etc. It's gotten a lot more extreme in recent years, and I hesitate to even call it "left" because it's more like they've branch off along a new dimension on the axis. You get some of that in Europe too, but it's nowhere near as radicalized.
There are right wings in Europe that carry very strong albeit slightly different conservative beliefs.
In any society, there will be conservative views and liberal ones. It just seems like there is a difference in how those beliefs are exercised. Extremism in one side just brings extremism to the other side.
There aren't any Maoist (or any of the other descendants of Leninism) governing parties in the Bay Area, either.
My memories from each visit is the smell of urine and people who need help using bullhorns to scream their thoughts. I thought to myself this is the charm of San Francisco (circa 2008) I use to hear about in song?
If the above were to change, I would definitely move. Not sure where but my top considerations are: - great school district - lower taxes and cost of living - Great outdoors / scenery around