Paper money will stay forever.
Why? Because its easier to make than coins.
Yes,is true
the future of paper money will remain secure and will not be jeopardized by any altcoin because paper money is very easy to use in the transaction process by any circle, and paper money can be used anywhere where and whenever we do not need to look for special outlets to use it. so it is very easy for everyone to make transactions or meet the needs of his life.