The paper money has been used as a means of exchange and payment for goods and services for years before the development of digital payment.The world is enhancing rapidly in the development and use of technology and more modernized means of interaction.
Although the digital and paper money both have major roles and can be used interchangeably when it comes to means of exchange and payment for services being rendered.
Nevertheless,the world is approaching a new technological age,so from my own perspective its only a matter of time before digital money takes over and is being used globally as a common means of exchange.