Re: "BTC Is backed by nothing while the USD is backed by 'full faith' of US gov't"
If you know anywhere a nation that doesn't prosecute you for not paying taxes, you let me know too 
Bahamas, Turks & Caicos, Bermuda, etc...
In the mean time, try not use gas, electricity, public road, public transportation, and public park, not to mention water and sewage either.
In what sick socialist world do you live in where all of those things paid for by tax dollars?