Beggars in fact can be choosers. If I give a beggar a rotten sandwich he can look at it and say "nah, I'm good". He can even be less polite and call me names for trying to give him food that is not good to eat. Why would I do that anyway? Well, maybe because I'm trying to build an image that I am a charitable person but I don't want to actually have the effort and costs of producing for him a fresh sandwich. In this scenario why people would take the beggars side.