Living in a digital generation where we are doing something that needed a technology and device, I think we can spend, buy anything with the use of internet and only in a few years paper money would not be used by people. We still have fuat currencies but it can also be accessed through internet connection.
Exact. Evolution is something natural to the human being since its creation. I see that the paper money is simply obsolete (as well as gold and silver and precious materials), many expenses in its production and maintenance, besides being extremely fragile and with a very slow speed in processing because it depends on banks and institutions governmental organizations to walk.
Already the digital currency opens the doors to us of the instantaneous transactions, speed in your transactions, independence of your own money, besides that in case you lose or break the wallet where you keep your money you can simply make a backup and recover all damages.