I can't understand why anyone would return to a city that they know is in constant danger of being flattened.
You are driven out by a storm or earthquake, you return to find a destroyed home and/or business. You rebuild said home/business only for another storm/earthquake to come along and destroy all your hard work yet again.
Didn't Einstein say "the definition of insanity is doing the same thing and expecting different results" ?
People are crazy.