I can never imagine a cashless world..because paper cash is important...and it can never be stopped...the real proof is always on paper..even court never trust on online proof..
Yes go to any part of the world we can see the use of fiat money, it is highly impossible to stop the use of paper money. Both advantages and disadvantages are there by the use of paper money. That is not a sort of fear but that surely affects small traders and lower middle class people. Main beifit of cashless society is that decreases fake currency.