But it's definitely a good idea.
For example, I pay 2.5x in rent for a smaller place compared to what I was paying for a mortgage before I moved here. But my salary is 2x and a bit, and I'm saving more than 2x as a result.
For most Americans, housing+savings is under 50% of income.
I kept my 401k rate the same and effectively doubled the amount of money I'm saving. It's not my only savings, but it is the bulk of it.
There are plenty of good, cheap restaurants and bars in the city. I know: I frequent them.
I will give you that the number of outrageously priced restaurants and bars in SF has increased. People just don't seem to give a fuck about piling on debt. I think the insane cost of rent has had a psychological effect on incoming people. Or perhaps some other social phenomenon that brings them here is correlated with absolutely no sense of money.