The more I think about SF the more I shudder. There's an interesting video "How to Fix San Francisco" what a guy uses Google Maps to showcase the structure of the town. It was eye opening. SF is jammed packed with people. From the skyview it looks grey with streets and buildings. No nature, no parks, nothing.
But why (serious question)? Other than A) Growing up there and B) Silicon Valley bragging rights the city does not seem to have much going for it. Yet, people still live there and pay a hefty price to do-so.