It wastes your time, it wastes the cashier's time. It wastes the time of the people in line behind you. Isn't wasting people's time embarrassing? Another commo

It wastes your time, it wastes the cashier's time. It wastes the time of the people in line behind you. Isn't wasting people's time embarrassing? Another common cause of credit-card-swipes not working is card declines. It's fairly obvious to the user and cashier, but potentially embarrassing if the people in line behind you assume you've maxed out your credit card/drained your debit card.