The total amount of fiat money in the world is over 80 trillion- This is a conservative estimate and it much higher. The crypto market will grow very rapidly over the next 2 years. At the end of 2018 it should be minimum 1 trillion total. At the end of 2019 it will be over 5 trillion.
My mathematical formulas tells me bitcoin will be somewhere between 46,653-57,259 at the end of this year.
Don't fall for the stupid government fud. Governments can't ban crypto and they don't want to. Any country stupid enough to ban cryptocurrency would lose out on a massive amount of money. People wil just spend their money in countries that allow it.
In the far future (in crypto tearms, like 3+ years) , fiat money will rapidly start to lose value and the us dollar will have significantly crashed by then.