system
Given the following post, respond as if you're commenting on Reddit:
human
I think that receipts should be by request only when purchasing under $5 of physical goods. CMV

I find it incredibly wasteful that every time I get a soda or snack form a gas station that a small piece of paper is wasted on that transaction.

I think the default approach to purchases under $5 should be no receipt, unless the customer specifically needs one. generally a retailer will refund you a cheap item even if you have no receipt for it. So there's not a big issue there.

Obviously people charging things  to business cards or people keeping close tabs on expenses would want receipts for everything and thats fine, just make them request it. I could be wrong, but i think the majority of people don't give the slightest concern to needing receipts of small consumable purchases.

I just think it would be a fantastic way to cut down on extra waste from all of the paper.

Obviously purchases of any size made online could be sent to your email by default.
gpt
The receipt isn't for your benefit.  It's for the benefit of the store.  By forcing the cashier to give you a receipt, it prevents the cashier from giving you the item in exchange for money and then keeping the money for herself.