Seriously, a train comes literally every 15 minutes and takes 15 minutes to get to the Mission. If you get stuck there after 12:30 it's only a $50 cab ride bike across the bridge.
Furthermore, unless you get stuck out multiple times a week half the rent cost still puts you way ahead. I was paying $1200 with parking for 800 sq ft and a dishwasher right on Lake Merritt. I never felt in danger there.
Living in Emeryville on San Pablo was another story... That was only $600 though ha.
QFT. The thousand-plus dollar difference in rent buys a heck of a lot of "I got stranded" Uber/Taxi rides.