"Germany only graduated out of monarchy with Hitler. "
Credit where credit's due:
With the Weimar Republic which Hitler killed off and which was left unsupported by pretty much all parties except the Social Democrats who were the only ones to speak up in the last semi-free session of the Reichstag/German parliament!
And I don't deny the relevance of the right to an armed uprising against real or perceived oppressors to the creation and early existence of the US of A. But maybe after more than 200 years of generally decent democratic experiences (with a few bumps here and there), you could perhaps put a bit more trust in your countrymen or is it that anybody going to Washington DC to work automatically becomes an oppressor and loses all American values? Plus for outside oppressors you have a well-equipped army to defend with.
I also doubt the continued relevance of a population under arms keeping its freedom in today's world. Neither Assange nor Snowden nor Ms Manning needed to fire a shot to rattle the system - and no bullet could stop what they triggered. The concept that even the mass of today's privately held arms in the US could prevent a 21st Century totalitarian surveillance state using current and future technology means is archaic at best. You could defend yourself against a zombie infestation with all those guns of course, true. Such acute threats by "hybrid species"
(cheap shot from me, I know) aside, I believe that doing away with the internet and other free media via technological means would today do more to pave a way to a dictatorship than confiscation of all privately held guns in America. Keep your computers and give up your guns except for a few to defend your cattle agains coyotes and other predators, I'm ok with that.
Now you say:
"But it's historic and in the Constitution!" That's true, but some centuries ago large parts of the Western World also came to the conclusion that the up to then dearly held practice of witchhunting was no longer needed to preserve public order.
Your Constitution thankfully did away with kings and queens, pretty much unheard of at the time, why does a piece of human philosophy that was once inherently modernist need to be unalterably preserved like it was a mosquito caught in amber as society progresses and faces new challenges? Ask yourself whether George Washington or Thomas Jefferson would say to Orlando:
"That is the price we have to pay and what we envisaged we would want to pay." Am I allowed to have my doubts about that?