> I haven’t spent any time with the homeless in the United States. Maybe I’d see that the differences are profound. But I ask myself: If homeless people and drug users in Liberia don’t misuse cash, why would we expect the homeless in New York to waste it?
Some percentage of people are homeless simply because they lack resources. The others are homeless because they have trouble functioning in normal society, either because of mental health issues, severe addictions, disabilities and trauma from war, etc. I would not be surprised if, due to the disparity in the overall wealth of the two places, homeless people in New York skewed much more into the latter group than homeless people in Liberia.
Some statistics: http://www.washingtonpost.com/wp-dyn/content/article/2010/07....
Note that the vast majority of the homeless are not what we think of as "chronically homeless." But about 5-6% of them are, and that subset accounts for about 60% of the resources spent fighting homelessness. And of that subset, 30-40% have "severe mental illness."