...So, it's clear that the members of the House thought that "bear arms" meant "militia duty" or "render military service". The question is, why don't you understand that this is what it means?
Let's just cut through all the bullshit...
Fine.
Conceded.
However...
Constitutional Law is far more fluid and able to change with the times that some give it credit for.
Even if that was the original intention of the Founders, we must remember that the Founders were fallible mortals, and their ideas are subject to modification over time.
And so, if by some chance, you are right, and it was their intention to allow the citizenry to maintain arms, for purposes of militia service...
The times have changed, over and again since those words were first laid down, and various judicial rulings, and custom and usage, have rendered it otherwise.
The Constitution is a set of guidelines... it is neither suicide pact nor straight-jacket... it is an instrument of the Will of the People.
And it is the Will of the People to sublimate the "militia" aspect of the Second as nothing more than the rationale du jour, at the time, and that other justifications for a Right to Bear Arms have long-since overtaken and superceded any original "militia" basis for establishing that Right.
Once articulated and agreed upon and established, a Right can be a devilishly-difficult thing to take away.
You cannot have the guns.
But you CAN get a lot of support for the idea of (metaphorically) crucifying (at-law) those who commit violent crimes with guns.
Especially the lowlife inner-city thug-gangs who kill women and children for fun.
Then again, perhaps Chicago and Detroit and other ghetto shit-holes would benefit from a few public executions of such vermin.