As soon as majority of the world is informed and knows about digital currency, what do you think will happen? No matter how good it sounds to traditional banking, how much of the population will make cryptocurrency grow?
Depends upon how the cryptocurrencies are promoted. Bitcoin can be referred as "illegal drug money " by some, at the same time "anonymous donation money" by some. So we need to see when cryptocurrencies will reach 30-40% of world population, will it be in positive or negative manner.
Believe me if it goes in positively manner, per capita living standard will rise many times.