In my country paper money is used way more than you'd imagine. But I still buy Bitcoin, since I expect world to ... evolve. As simple as that.
this is the world of technology which has now almost penetrated all corners of the world, and be grateful that we are lucky people who can easily access everything digitally. while out there there are still villages that are very difficult to reach by the hustle and bustle of technology. like the oldest tribe in the world. and our job is to maintain harmony with each other, not to discriminate against current banknotes or digital money. what we need to change is the system and the understanding of it.
in my country, paper money remains the dominant transaction tool compared to digital money. Don't we have to co-exist between us technology users and those who still cling to conventional systems.