Digital currency is basically a threat to the old conventional paper money, as the world is heading toward the cashless society then paper money will surely feels its effect.
with the changing times and the rapid development of technology of course it will impact and give effect to the paper money. we have to admit it. technological advances nothing could hold this. including paper money although you are very comfortable with paper money. it does not rule out the possibility. what about the opinions of others?
Paper money will always exist even if bitcoin becomes a global currency just think of those illiterate people who don't know anything about internet and new technology who earns their wages in fiat, do you expect that they will start using bitcoin in future?
Yeah you right. I think bitcoin can't replace paper money, the future of paper money will still exist because people still use it even digital currencies like bitcoin come.