SF is high on my bucket list of places not to visit.
If you had a time machine and could go back to the 1950s and the early 1960s (before the hippies, then the criminals, then the gays, then the homeless took it over) it was an amazing city.
When you see isolated ancient ruins and no-one remembers the great civilization that lived there and wondered how this could be—you now know what happened— the “progressive” zombies destroyed the place.