I had a recruiting firm contact me about a job over there and they were gushing about the salary being $120k/yr. But with high cost of living, high crimes rates, state income taxes and extremely high housing cost (a simple 2x2 house is going for $6,000/month). I just told them NO WAY JOSÉ!
Not too long ago my twenty something niece visited SF with a group of her girlfriends. Her primary memory of the city? It smelled (mostly of urine).