Real money will never disappear for the simple fact that there is no offline cryptocurrency and I don't see that there ever could be. I do think however they will complement each other.
Until they take bitcoin at McDonalds and the Shell station, I think I'm going to stick to cash. It's really a pain to buy giftcards with bitcoin, and you can only buy certain places (I can't find Taco Bell on the Gyft app, they have a lot of places but they aren't all so useful).
I can't give bitcoin to my dealer
