Well you could also say non religious people do good for their own self interests like publicity. Or self glorification. Who really got time to scrutinize if every requests for help is genuine? Dont be upset if you feel you are being taken adavantage of. Sometimes is good to be in such situation you become wiser later. If money can buy wisdom i think this is a good deal. Now we return to the same problem like doing things to get a reward. Even non religious people have the same problem.