Comment by AdieuToLogic

> Right now, the only thing that makes credit cards a better proposition is being able to pay without having enough money in the bank, and maybe enjoying greater protection from fraudulent merchants.

This is the entire value proposition of credit cards and is what undergirds the issuer (bank) justification for interest rates assessed. To be able to defer card-holder immediate payment for some period of time and/or to put the onus of proof-of-purchase on the merchant instead of the card holder.

The last point is non-trivial when considering debit or debit-like networks result in funds being transferred during settlement (often performed daily), thus making the customer responsible for proving they did not perform the transaction post hoc.