> if you can pay the full balance every month then there's no reason to not use oneAnd if the alternative is using a debit card, then by definition you can pay the full balance every month, because the money has to be there in your bank account before you can spend it with the debit card anyway. It's the same money either way, the only difference is whether it comes out of your bank account in little increments over the month or in one big chunk when you pay your monthly bill.