I cannot rule out the possibility of paper money to dissappear but it will take more than a century. Most digital currencies including Bitcoin are still in the middle stage and therefore cannot make paper money to dissappear so quickly.
I agree with you. Bitcoin is only at the implementation stage and he has a great future. But for the time being it is becoming popular, Fiat will be used more than the crypto currency. I agree, 50-100 years will still exist paper money
Paper money will remain alive and kicking for many years actually. The net worth of paper money or specifically dollars transcend far enough which may take super long to reach. For now the future of paper money still continues to live and it is impossible for now and the next years to come for it to disappear.