Despite what you have heard, one can use silver for most of your spending if the establishment accepts it. Fiat money is only allowed for debts, public or private, that means if you ate a fancy restaurant you have to pay with fiat money, if you eat at McDonalds, you could use silver.
There's no free country in this world. The gov't can take your gold and silver if they want to. It had happened in this " free country " before. But if they wanted my silver, it has to over my dead body.