My experience doesn't line up with your preconceived notions of the Bay Area at all. I've worked at three different jobs in San Francisco, and all of them were standard 9-5 jobs. I've worked weekends under 5 times. Most of my friends are in the same situation.
Sure if you want to work at an early stage startup, you can grind yourself into a paste. But there are plenty of jobs here where that's not the case.
Sure if you want to work at an early stage startup, you can grind yourself into a paste. But there are plenty of jobs here where that's not the case.