In the grand scheme of things it all balances out. The person at the store with 100 items is going to the store much less frequently than the person who gets three things. I say this as someone that often stops at the store to get 1-5 items. The ones getting a ton of stuff at once are shopping much more efficiently and using less cashier time per item as the real delays come from payment, not the scanning/bagging of items. Self-checkout or express lines are there for those of us who get just a few things. Barring that I never feel like someone should be obligated to let me ahead of them because I only have a few things. The only thing I ask of those ahead of me is to be fast when paying, be aware that small talk with the cashier is just to pass the time and should not lead to them sticking around once the transaction is done, etc...
I'm personally much more frustrated with the number of people that are too slow/dumb to properly use a self-checkout machine, can't figure out how to insert their credit card, etc...
I'm personally much more frustrated with the number of people that are too slow/dumb to properly use a self-checkout machine, can't figure out how to insert their credit card, etc...