People don't need to spend their money on the most optimal thing that benefits society. They can spend their money however they want. If they want to give it to

People don't need to spend their money on the most optimal thing that benefits society. They can spend their money however they want. If they want to give it to a kind stranger who made their day better, who are you to tell them not to. I've had some awesome servers who have genuinely made me happier when I need it, screw it, I'll give them money to say thank you.