Future remains intact of the paper money as worldwide there cannot be one currency. Paper money will not disappear anytime soon, maybe it will be replaced by something else similar to paper. Bitcoin could act as an secondary currency if country adopts it.
I think this is more depending on generations. The older generations want their paper money, which they can feel and carry around. But the younger generations prefer the plastic money by just having one credit card. In the next 20-30 years we will see the paper money more and more disappear.
For politics it would be great to get rid of all paper money as they can fully control virtual currencies.