The most salient lesson I got out of spending my high school summers doing volunteer construction is that I hate poor people.
It made me realize that most "humanitarian" outfits serving "the poor" are doing a great disservice to the elimination of human suffering. Subsidizing "the poor" just creates more poor people. If we really wanted to reduce human suffering, we would leave "the poor" to die off and subsidize the family formation and procreation of successful people.