For one thing, there are multiple restrictions on freedom of speech. Maybe you think those oughtn't exist, but we're talking about the status quo, not ideal worlds.

This is not to mention the idea that there are multiple ways to adjudicate whether this means "all guns" or "some guns," since there's quite a difference between an assault rifle or handgun and a simple rifle. Then there's the "well-regulated militia" piece.

I'm not advocating for any particular reading. Rather I disagree that the Bill of Rights ought to be the last word in any discussion. I think the Bill of Rights is better suited to a starting point, and the history of the judiciary in this country seems to bear this out in practice.