What are the chances of living in a world with no actual money ? 
It'll be more convenient for us not to carry such Cash on hand.
I agree to that, It was really nice to buy anything without carrying any cash anywhere because it was easier in that way and since it is a digital currency it was also a fast transaction but this kind of idea's will be always depending on the government if they will implement it or not so lets just wait for their decisions about bitcoins.