The real shame is that too many people who have enough shit to live comfortable place a high value on life. They end up caring a whole hell of a lot when a shit ton of people who don't have it that great die off due to some disaster because of the lack of resources.

It probably is also the case that any change foisted on us will end up coming from wealthy nations. I really don't see a place like Haite on its own saying "Damn cholera really sucks, we should clean up our water supply or we'll all shit ourselves to death." And then that actually happening. Though if allowed to run its course the population while somewhat decimated would of course come out much stronger and resistant to the disease.