Once people put their money into Bitcoin and other cryptocurrencies and don't bring it back out because so many more people are accepting cryptocurrencies at that point there will be no taxation on your cryptocurrencies because you didn't transfer it to US Dollars and take a profit therefore there is no taxable income on that gain.
The price of Bitcoin and other cryptocurrencies are going to Skyrocket within the next few years meaning more and more people are accepting them and using them for transactions at this point you would not need to transfer your crypto to u.s. dollar to pay for things you can just pay via bitcoin or other crypto directly. Get on board sooner than later, this is going to be as big as the internet was or bigger. Government will loose its taxing ability and its ability to enforce all of its pointless laws and regulations.
In the future the only government that can exist will only be that which is voluntary.