Perhaps, living in SF you are looking for trouble, but at least there is not an annual certainty that a major event will either brush the outskirts of the town, or wipe it out completely.
If you consider Seattle or Portland, there is no question that at some point in the future, there will be a major, devastating natural event that will destroy much of the town with tremendous consequences. Whether it is a major earthquake, or lahar, it's inevitable based on the strata underneath. Yet the timescale on such an event is so large, that it seems more acceptable to live in these areas.