Why focus on age-related disease when massive racial and economic disparities still prevent a large proportion of the population from even reaching an advanced age?
a) There's no obligation to work on earthquake-ridden cities over any other issue.
b) Mythical Man Month problem; firefighters might be good at extinguishing flame but not repairing earthquake issues, and there's only so many civil engineers to go around.
c) Your comment is proof that no good deed goes unpunished.