the future of paper money in my opinion can survive because everyone still needs paper money almost all the world still use paper money so than that there will be no one can replace the paper money
Digital currencies are efficient and very attractive to a lot of people who are seeking freedom in terms of their money and transaction but we all know that this currencies cannot be approved by the government to replace the usual fiat or currency we are using since it will be greatly affecting one's country isince digital currencies are so volatile and not stable.
I dont know whether in next 5 years, 10 years or in the future, we must change paper money into another, it will be too difficult to change. Because all of us use fiat and it is the most popular and easiest way to buy something or pay for your expenses for in the daily life. For example, if someday in the future, we must use digital currencies, oh its so crazy because we all know that there also have many people dont know anything or knowledge relating to crypto currencies, so its so difficult to change paper money into another. It will not happen.