Actually, yes it is voluntary. Where does it say in the Constitution that it isn't?
Kings were common in the Western world the last 4000 years a well. Said kings liked keeping their populations in check by keeping them disarmed... Sort of like what you are advocating...
Are you really espousing communism? "Community" ownership of property? Not that this doesn't fit with the rest of your mindless drivel...
Hey, I think it does because you never even thought of how common ownership allows certain folks of a criminal bent to STEAL MY STUFF, if not yours!
Still, your disbelief in the utility of "crew served weapons" suggests your mind is still stuck back there in the days when you stripped down and ran into battle in a disorganized manner.
BTW, when the militia is called up and you are a citizen YOU MUST GO. There's no "voluntary" part to that demand.