Paper money will stay forever.
Why? Because its easier to make than coins.
they are also easy to counterfeit than bitcoin or electronic payment, i guess they will eventually fade away slowly or reduced for only small business in the future
what does the future say about the paper money i dont know what they think about the papermoney becuase i dont know much aboht the future of the bitcoin you know!
The future of bitcoin is unpredictable, so is the future of paper money, because either one of them will be used the most in the world in future now it cannot be predicted if which one of them will stay and which will vanish forever, or maybe both of them will be used, one as the main currency and second as an alternative.