Banks benefit hugely when you use your credit card, they make money off the transactions. But also, they know that when you use your credit card you don't think

Banks benefit hugely when you use your credit card, they make money off the transactions. But also, they know that when you use your credit card you don't think about your purchase as much as when you use cash. With cash you watch it disappear, with a card its just some abstract numbers on a screen.