Get rid of all the cash?
Probably sometime, but this is still a long way ... of course, this is not only our (user) goal but also (probably even much more) governments, because cash still remains the most difficult way payment to track down...
However I think needs very long time and saying that I do not think about years but rather about decades ...
It is always easy to convince people that changes are coming fast but actually what is happening on the ground can be different. The massive adoption for cryptocurrency is still to come and this can't happen within just years or even just a decade...as we are actually dealing here with real people and not machines that can be easily program. There are many places in this world where cash is always the prime way of exchange so I guess we should be looking at the accelerate use of non-cash based transactions but not expect that cash can totally be eliminated. When credit cards became so popular in the 80s and 90s people were predicting that we are going to become the cashless society...well credit and debit cards are so popular today but so does fiat money. I am then seeing a world where people can have many choices they can opt according to different situations and locations.