Bitcoin is not controlled by anyone and you can earn good money without paying taxes. It is very convenient.
That's right, you really have the full ownership of your bitcoin same as real money, and real money is also convenient in a different way. But we all have different point of view in that matter.
And ofcourse in paying tax, transferring of funds have fees' and we also consider it as tax,so you are not really evading at paying taxes.
I still didn't get the difference in your submission, well Bitcoin differs from real money in several areas but I have a few in mind so I will list them.
1. Bitcoin isn't printed out physically like real money.
2. Bitcoin has its own payment processor(the blockchain) than helps transfer Bitcoin globally.
3.Bitcoin isn't controlled by a central authority like a central bank or government.
4. Bitcoin is freedom and grants access to your money 24/7 securely without the need for a bank.