Living in the promised land?

What should we expect to live in the present circumstances? Amid frantic and seemingly endless maelstrom of creating cryptocoins and virtual economies, where not only those who have the financial means to invest significant capital using common currency course, may take advantage of this great boom, but also those who have intelligence and vision necessary to go capitalizing on new virtual coins that by their nature, have the ability to be increasing its value exponentially over time.
It is an exciting world where there is an addictive need to buy, sell, mining, use faucets and even ask for donations of hundreds of cryptocoins available today.
Is the fate of world economies inevitably go moving towards this model that has proven its efficiency for some time ago?
Will we be able to give sustainability and security required before the accumulation of risks and threats that exist in internet in our time?
Could we stop getting used to purchase goods and services without the use of a physical currency in the day?
These and many other questions arise in the increasingly growing community immersed in this fascinating world and which is difficult to want to stop enjoying.
All your opinions are welcome.