The federal reserve system is VOLUNTARY. If you do not use the system you are not liable for taxes paid into it. The moment you use federal reserve notes you give your consent to being bound by this contractual agreement.
This is a nice dream. It falls apart, though, when men with guns break down your door.
I highly recommend that you read this (
http://www.nostate.com/116/the-penalty-is-always-death/), and then think about how voluntary it is.