Every year migrants around the world send billions of USD/EUR back to their families.The cost of sending cash via Western Union and Money Gram averages 10-20% in fees. However bitcoin is emerging as an alternative which offers lower fees and faster payments.
Bitcoin also helps allot for countries with high inflation to store value in Bitcoins.
Bitcoin helps for millions of people worldwide.
How bitcoin helps for your life?
If this thing will happen, I guess it will affect the economy of the real world, if bitcoin will be used as the way of sending money of the workers outside the country because government do not have an access to bitcoin. But then in the side of the sender and receiver, it will be a big help.
but i think it will not effect the economy of the states but instead it will make the economy of the states more stable. because there will be no race about the currency of the world, therefor there will be only one way making money. because all the people of the world will be using bitcoin as one currency. therefore there will be no risk to the economy of any countr