> I've never seen the gripping poverty and desperation that's common in the United States anywhere in Latin America; even the poorer communities here tend to be vibrant and well functioning, with families and little farming communities everywhere that are living life well.

with all the respect but what a naive paragraph. i suggest you to go away from touristics places or get into a poor part of any big city in Latin america. the stuff is nasty. what you are comparing is relatively stable rural families that would be an akin to a rural medium class on the USA... you can almost say in 100% of the cases a medium class North American is equivalent of someone from the upper class here. in term of goods/comfort, not work. and if you still romantize as a traveler these poor communities on the backcountry, i suggest to try a week or 2 of their work. just take the routine of a +40 y/o man to check what being 'medium class' is about. being on the hunger line with a bare house is poverty and Latin America has many examples