So as far as we know BTC currency is growing wide, do you think there will be when it become a national currency?If yes, why?If not, why?
Lets understand what is a currency and what makes any object to become a currency. First thing first a currency:
* material required for creating a currency should be available in quantity
* material should not be overly available as well. Like a silica or ice.
* A ruling government should be the sole owner its national currency. Otherwise forces from outside will demolish that country v\by manipulating the price/value of currency.
* That is why government should be the one who make the decision when it comes to a currency.
Considering above points we understand that earlier copper, silver, gold were used as currency. At some point in history aluminum and other things like sea-shells, beads were also used as currency. However as time evolved due to one thing or other these material were abandoned as currency. For example aluminum became much cheaper and easy to extract. beads and other things became obsolete because of oversupply. gold, silver, copper coins followed same suit due to scarcity and expensive nature of these material.
As time evolved, paper currency became widely accepted as currency medium by almost all countries. Paper is readily available however type of paper required for the currency is not easy to acquire. So paper currency become mainstream. Over the period of time e-money became popular and more and more people are tend to use the e-money (creadit, debit, internet transactions).
* Cryptocurrency is an active concept from the economics point of view. Some countries are/may be considering to shift their own cryptocurrency.
* At this point we saw what makes for something to qualify for a currency. Coming back to bitcoin, as it is clear that bitcoin is decentralized by its nature, any country or outside force will change its price at will. This is a disaster for economy.
* Next point is bitcoin value is too much volatile to qualify for a currency.
* Value of bitcoin is way to much costly to qualify for a currency.
Bitcoin can not be a national currency. Forget national currency.. at this stage it can not act as a currency in first place. Bitcoin is the best commodity we have on this planet right now which IS giving highest return on investment.