In fact, bitcoin is the perfect currency of our time. Bitcoin provides the perfect system of cashless economy (future economy).
So which year do you think of bitcoin total dominance and why?
It hasn't happened yet! There would come a time that bitcoin will definitely be the talk of the town and that everybody will be into it. It would be easier to use than today and we can use it almost everywhere. When that day comes, that would be the best year for bitcoins and it would be considered the day bitcoin dominated other financial instruments.