system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: "Pay-it-forward" chains are pointless and unnecessary.

You've all heard or experienced going to a coffee shop, ordering your drink and finding out the person ahead of you has paid for your drink. Then the cashier says "This has been going on for 30 customers so far!" You then normally "Pay-it-forward" for the person after you since you don't want to be an asshole and break the chain. 

My question is this: What is the purpose of keeping the chain going if everyone is basically paying the same amount of money or more than they would just by paying for their own order? How is that generous?
gpt
It's not meant to be generous in the sense that someone is gaining financially at the end of it, it's meant to feel good.  In the end, everyone is spending roughly the amount they would have spent anyway, but in addition to whatever product they receive, they also get the pleasure of A) receiving a gift from the person in front of them and B) feeling generous in buying a gift for the person after them.