The property rights to your belongings are also fundamentally reliant on the government's promise to use violence to enforce those rights. Concluding that it is therefore immoral is too simplistic. You have to take into account the full consequences of not enforcing those rights, and then determine whether society as a whole is better off or worse off.

Using your same argument, taxes are a peaceful price for civilization. I don't need armed tax collectors busting down my door to take my money because we live in civilized society.

The fundamental value of a national currency is not violence. It is civil society.