There is an interesting philosophical conundrum that I think these people get hung up on; when, exactly, did we agree to any laws, taxes, etc.? I certainly don't remember being asked my opinion on the matter. That being said, it's really just anarchism at its heart and comes with the same baggage: if the law is a farce then nothing stops me from clubbing you over the head, taking your shit and laughing as I stroll into the sunset.