We make our purchases with a bank debit card to earn interest on our checking accounts. We also have several credit cards which we pay off each month-so no interest charges. The credit cards such as Amazon and LL Bean gives us bonus points which reduces the cost of future purchases. The key point is that we pay off our credit card purchases within a week of the purchase.
Took two years and a lawyer to get paid but by that time, due to the crazy interest rates that popped on the cards when I was late one month on several of them, I was quickly buried.
Took me several years to pay off the mess, but I did. And I never had another credit card again. That was 15 years ago. Debit cards? Yes. Credit cards? Not for me. . . Cash, as always, is king.