Can you trust your local supermarket to accept Bitcoin if it is banned? The point of a currency is primarily to facilitate trade, everything on top of that is just there to make the process more efficient and lower transaction costs.

I personally think Bitcoin is a terrible currency for non speculative trading due to scaling problems and it's volatility.

Your own way is a deadend. There is nothing there. A currency is about relationships and trust. You can't own those things, you can at best only enforce them against people's will if they don't maintain them voluntarily.