I have a feeling that paper money will somehow disappear one day and things like credit card payments will be the norm for the people living in the next generation. Since there is a bunch of people that already owe a bunch of money to those credit card companies, I think that they will try to erase people's credit card debt if the individuals move to a different payment system that they have. Since they technically owe zero money only Fiat, I am sure that it would be possible if they get large enough.
Yes, I agree with this. This is becoming more and more visible even at the present moment. Less people are using cash and mostly we prefer paying by credit card. However there is still seeking of new payment method which would be the safest and more convenient.