If it's any consolation, most engineers here are not senior/staff engineers and they make less. Rent here is very steep (~$3500/month is the median price for an old 1-bedroom in San Francisco), but the home prices are really insane.
Also, there are many companies and start-ups up here that pay much less. Lots of people scrape by, and lots of people move away.
I personally really like LA (which is not something I can openly admit up here) and hope to transfer there or to San Diego.