Paper money will of course exist in the future. And that is just impossible to happen that it will disappear.
Bitcoin is of course more used in the future and that is good. But many people also need their paper money.
Well if you look at
some futuristic movies theres no paper money there and thats where we are heading right now. We are evolving to a digital world you might not agree with me but in reality thats were we are heading.
As to me, the best movie about a cashless society out there is
In Time, where time is money, i.e. time left to live. The movie idea has numerous philosophic and economic implications and by far beats those of a digital decentralized money like Bitcoin...
In fact, I don't even know how to correctly describe such a monetary model