Some country are getting saturate to use paper money, its value is decrease eveytime becouse of inflation. I think people in the future will choose another thing to be a currency.
Inflation is something that really affects the lives of people, making fiat currency just a tool for governments, that's one of the biggest reasons why people should adopt Bitcoin, and there are no complications to using it.
Some people may disagree, but the fact that Bitcoin is a deflationary currency has only good things to bring to the ecosystem.