I think it would be more accurate to say that all the Framers of the Constitution and the Bill of Rights had just come through a war that was ruinous financially and emotionally to most of them. (It was a very near-run thing.) All had suffered under the oppressive rule of King George and his ministers. So they were wary of giving power to the government, and more wary still of a "standing army" - i.e. a government force administered by the government. And as you correctly pointed out, they had never heard of a "National Guard" and would have considered it just another "standing army" if they had.
Your Hurricane Andrew argument is the best of all. It gives practical shape to the eternal truth that every man has not only the God-given RIGHT but the RESPONSIBILITY to defend himself, his family, and his community.
Yes. The Almighty gave the Tiger, tooth and claw, the horse, swiftness of hoof and if cornered a hard and deadly kick. The concept of being "helpless" is foreign in nature. Every species has some means of self defense. Those who wish to disarm us, are committing the un-natural and subjecting the country to disorder during calamity or subjugation to dictatorship.