[flagged]
... all that being said, I have lived in the Bay Area for a long time and do not intend to leave anytime soon. There aren't many other places in the world that can be called hubs of biotech, software and semiconductors all at the same time. Many parts of the South Bay are S-tier in terms of safety while maintaining the same price point as SF, so if you prioritize safety over having a life outside the confines of your computer terminal you return to after your 8-6 job, then the South Bay is actually pretty good. If you want to be able to hit the beach after a night of raving and clubbing preceded by 5-star dining and zuck-surfing on the Bay, while being willfully ignorant about the constant risk of a homeless man jumping out of the bushes at you, then SF is your best bet.