Perhaps the most obvious drawback to using a credit card is paying interest. Credit cards make it easy to spend money, perhaps too easy for some people. In addition to interest, many credit card issuers charge fees for late payments, balance transfers, cash advances, and overseas transactions, among other things. When you reduce each side of the cashback coin, cashback credit cards have more stable rewards overall than other rewards credit cards.
The many advantages of cashback credit cards are probably why 74% of Americans prefer cashback rewards instead of miles, hotel points, or even free gas.
