Why do you have to live in SF? You can live in SJ/MV and save more than half on rent. You can use BART/Caltrain for commuting. Life is great in Bay Area doesn't

Why do you have to live in SF? You can live in SJ/MV and save more than half on rent. You can use BART/Caltrain for commuting. Life is great in Bay Area doesn't matter if you are staying in SF or in other cities in the Bay. I seriously don't the understand whats so special in living in SF. I do commute to SF on weekends whenever I want and on weekdays for work.