In a big city, I can give money to an organization and not have to actually SEE the things they do. In a small town, people might even know some of those being helped by such organizations, or worse, be asked to volunteer time. Volunteering time would mean actually having to interact with disabled and LFA people. God forbid. Giving money then turning away from the gritty details alleviates the conscience.
Maybe that's too cynical a take on it?
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When God made me He didn't use a mold. I'm FREEHAND baby!
The road to my hell is paved with your good intentions.