We'll probably have to agree to disagree on this, sir. While you are quite correct in that no one (besides police, of course) have loaded fire arms at gun shows, many people park "ammo vans" right across the street and sell munitions as you're leaving (at least they always had them at the gun shows I went to in Houston), so knowing that 500 people could storm across the street, arm up, and gun you down probably lessens the incentive. Even putting aside this point, I don't think it's really much of a coincidence that the majority of mass shootings take place in "gun free zones" where the killer can be pretty confident that no one will be shooting back.
Japan - well, I think there are much broader cultural differences between us and Japan that highly contribute to this as well. They tend to be a much more polite and respectful people that we do, which permeates all aspects of their society.
And while my perspective on the Bill of Rights was really my perspective, my reading of the Heller decision leads me to believe (and I may be wandering out of bounds, but I believe it is the majority viewpoint) that the Supreme Court has determined that the second amendment applies to the individual, not a formalized militia. Obviously has been hotly contested over the years - "does 'well-regulated' militia" indicate a requirement, or does it indicate a supportive reason for the individual right?". The initial reason for its creation is exactly as you cited, I believe - an armed populate could form up to fight the British, and at any point, every able bodied man would be called up, which is probably what blurred the line on "is it an individual or collective right?".
I absolutely agree that the U.S. has probably the highest level of gun ownership in the world, although I'd have to research the per-capita murder rate, as I believe it has been trending downward over the last 20 years or so (generally speaking), which has been happening as gun laws are loosening rather than tightening. Now, while this doesn't definitely indicate "causation", I believe it is an important point to consider. Pew Research Center study is located here
http://www.pewsocialtrends.org/2013/...ublic-unaware/. It's a little old (2013), but seems to indicate that despite our violent tendencies as a species, we're learning.
As for the people that "don't want to see open carry"...well, that's a matter of preference and dare I say possible squeamishness (not applying it to everyone who believes this, but probably a factor for some), which does not (again, my opinion) trump personal rights. However, I have no data to detract or counter your viewpoint, so I'm totally willing to concede that you have cited a majority opinion. Of course, aside from a few wingnuts, I don't think that many people really would open carry after the original thrill pales, so I think that the "fear of the problem" would likely be much larger than the problem itself.
I'm not a legal scholar by any definition, I just read up about this, and very interested in the second amendment (and all of the others for that matter)...I lean towards a civil libertarian viewpoint, which probably explains my outlook.
Love hearing the other side, though, sir. Thank you for a well-constructed and presented viewpoint! In the end...is there a "right" or "wrong"...probably not. We all just have our opinions, and frankly, if there was more live and let live, this world would be a happier place.