Honestly, if you're well prepared and live/work in buildings that have been seismically retrofitted, you're probably better off in an earthquake than most other natural disasters. San Francisco is making a lot of progress in terms of earthquake preparedness (recently passed a soft-story ordinance, lots of new building codes around earthquakes), and a lot of the infrastructure has been retrofitted for earthquakes fairly recently (bay bridge, transbay tube...).

My advice would be to put together a good earthquake preparedness kit, move to an apartment that has been seismically retrofitted, make sure your big appliances are bolted to the wall, and move on with your life. Plenty of other things to spend your time worrying about.