I personally don't think paper money will completely disappear any time in the near future. It is true that electronic transactions have become more and more common over the last few decades and I see no reason why this trend will not continue. We may even get to the point where paper money transactions become incredibly rare - for some, they already are! At that point, the tables could turn and what we now consider paper money may actually act as the backing to our electronic currency, the way the gold standard once backed paper money. But even this scenario is difficult to picture, in part because of how we have historically placed a value on paper money.