Although we are entering an age where everything has its digital version, I don't see the paper money being obsolete. It is still nice to have physical forms of money. The increasing transaction counts using digital money and online payment has reduced the need to bring cash but there are still things that are better off being paid by paper money.
yeah I think that although credit cards or online payment methods or other digital rampant someday. I think that paper money will always be useful and valuable, no mind to replace paper money into digital form, may be the same as today, digitally or online payment only becomes an option only in future