I'm not sure that there is a good and balanced answers to your question. Here-after my personal algorithm. #1. Giving every time is not an option. My money will not be enough to save the world and I will feel upset before! #2. Throwing people away systematically doesn't feet with my very human nature. In conclusion, sometime I give. There is no good or bad people/moment. Most of the time I don't. I live with the idea that I'm not the best man in the world. Trying not the be the worst... I'm not sure if it helps...