[mkl95]

> You have to remember to pay back your credit card debt before the clock runs out

In my experience paying with credit is a fire and forget action, since the money is debited automatically at the end of the month, with no interest. The UX is great, since it only takes a card swipe [as long as I have the funds to pay it back and I'm within my credit limit].

In an scenario where you are not debited right away, I agree completely. But I would only expect that to happen by accident or if the user lacks the financial literacy to understand there are better ways to buy whatever they want. I may be missing some financial corner cases.