At the time of the Constitution, the militia was all able bodied men. Think Lexington and Concord. There was no police force in most of the country, no National Guard and a tiny standing army. Without a personal right to own arms, there would have been no militia.
The collectivist argument is really stupid. The other provisions of the Bill of Rights all deal with personal rights. No amendment of the Constitution would be needed to authorize any state militia to be armed; just as no provision of the Constitution was needed to authorize the arming of the Army and Navy.
But then we're dealing with the federal courts who find rights where the Constitution is silent and disregard plain language where the Constitution is explicit because they view the Constitution as a "living" document; translation, it means what we say it means, not what it says.
(2) If judges have lost their history and common sense, we the people can re-learn our history and retain our own common sense. We must re-learn the fact that their power comes from us, and act accordingly rather than just sit passively and watch the parade of civic affairs pass us by.