There is no way the authors of The Bill of Rights could ever have imagined semi-automatic firearms with 30-round magazines, they were talking about single-shot muzzle loaders for hunting only, therefore The People should NOT be allowed to have semi-automatic high-capacity firearms...
At the time, a single-shot front-stuffer was exactly
what the military had.
I would argue that equivalent arms was exactly
what was envisioned.
Do I need
an "assault weapon?" Meh, probably not. But as a mentally sound, law abiding citizen why shouldn't I have one? Why shouldn't you, as a (presumably) mentally sound, equally law abiding citizen have one too? We could go shooting together
There are lots of things that people don't need
, but I don't believe it is the role of government to tell me what I need