1. The 2nd Amendment was written at a time where "the army" was the well regulated citizens' militia. Everyone had to bring their own weapons as there was no existing provision at the time for issuing weapons to the rank and file. They did not envision either a standing army, the technological advances and how they would impact society, government, and defense or the degree to which the military would become the first avenue of development for technology along with the economic incentives/realities of this partnership (which Eisenhower warned us about).
The Bill of Rights were included at the insistence of the anti-Federalists, who were concerned with the power the state had been granted by the Constitution and wanted the rights of the people, which are above those of the government, to be clearly stated so no one could ever deprive us of them. Sorry, but "it's much later now and things are different" isn't exactly a compelling argument. You lose.
2. The 2nd Amendment is no more "sacred" than anything else. While I get the idea that the constitution embodies principles that are quite valuable (in some cases essential) in terms of equanimity and good governance, nothing in it is a priori and the framers couldn't foresee everything. The framers recognized this and that is why the amendments exist. The whole "strict constructionist" thing is bullcrap.
The Constitution is sacred. You don't get it, which is why you're not truly an American. I mean, legally you are, but spiritually you're alien. It is because we have rights that the government or the people cannot deny us that we're a free people. Once there's a way to infringe or deny us those rights, then you're not free. It's rather simple. Try really, really, really to wrap your head around it. The Constitution, every part of it, is sacred. The framers couldn't foresee that guns could be used in crimes? Oh gee. The framers didn't realize that guns were good for killing people? Oh my. This 'the framers couldn't foresee' nonsense is rhetorical drivel. The Amendments add rights to the people. They don't take them away. You might think this is a coincidence, but that's only if you're retarded. Once you realize what rights are in the Constitution, you'd know Amendments were never intended to deny us any of the ones already there -- and none so far have. Gee, big coincidence.
3. Practically speaking, private citizens can't get the "good stuff" anyway. Post 1986 automatic weapons are not available for private sale even if the person completes the paperwork, background checks, waiting period, and tax stamp. The "against tyranny" contingent must know how vastly outgunned they are. I do see the logic of their argument but, honestly, parity is not possible in the context of our present situation. We're dealing with a government that has drone aircraft, sonic weapons, serious SMG capability, gas, grenades, and all sorts of tactical goodies. So. . . while it's nice in theory, the 2nd amendment remains tied to history when, at the time of the American Revolution, theory and reality were much closer.
It's about our rights to keep and bear arms. There's nothing about being able to have what the government has. So you're for allowing private citizens to own Missile Defense systems and nuclear weapons? Of course not. This is a disingenuous argument of yours.
People who can't understand the Constitution have no place making arguments on behalf of Americans.
"Some people would rather die than think; in fact, they do so" -- Bertrand Russell