I agree with all of that.
I don't really think they could have foreseen the issues that would arise with the 2nd amendment that would appear in the 20th century.I think they felt that one had the right to defend themselves and of course in those times many relied on a rifle,musket or blunderbuss

as part of their daily life as well and they would not have had a desire to take such a right away.
The reality is that the world has millions upon millions of firearms in it so many that banning them will not have much effect on those that really want them so reasonable regulation is most logical.I think we have it about right in the US.What can you say really? Far more people are killed by cars and vehicles every year in the US but you don't see people getting bent all out of shape about that.
And in nations where guns a scarce the nut cases find another tool I recall in Germany the killing method was driving a car down the autobahn in the wrong direction at night and they ram into someone at very high speed.They call them Geisterfahrer or ghost driver according a German Polizei once told me it happens every single day somewhere in Germany killing and injuring people not just the car they hit but also mere misses that end up losing control.