In the current situation I think paper money will not disappear. There are many things to consider and in reality it's not easy to be used this online currency. Because others can't adopt easily this online currency and paper money is still the original use even in the future.
I think money paper will not dissapear because not all of us is in favor of online currency if there is no paper money,what will happen to those who don't know such technology like this, the one who lives without internet and hi-tech gadgets. Paper money will still be able in the near future.