Except that people think about doing their good deed for the day. I bet if you asked someone who'd just undergone major surgery to save someone's life if they now wanted to donate money as well, they'd say, "Look, I've sacrificed enough."

This is part of why I try to make my help as hassle-free for myself as possible (writing a check). I probably end up helping more in the long run the easier it is for me. Surgery does not sound easy.