Jefferson said a central bank was more dangerous to our liberty than a standing army. They also basically told us to overthrow the government and rewrite the constitution in our situation

We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.

That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, -That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness.

Unfortunately the "no standing army" thing was a product of a certain age. When the fastest an army could move is via sail or a trotting horse, you can get away with not having a standing army. In the months it took your enemy to reach you, you could train and prepare. Standing armies always had some advantage, but it was actually possible to maintain a viable defense without one.

But today? The enemy army will be occupying your capital before you can even send all the draft notices out. Imagine if Ukraine had had no standing army when Russia invaded. And that's just with how quick ground armies can move. We haven't even mentioned aircraft and paratroopers!

Sure, there are a handful of countries with no standing army today, but they're countries that simply don't need a credible defense. Iceland has no army. But an Iceland without an army would perform in war only slightly worse than an Iceland that was as devoted to war as the historical Spartans. Iceland could tax themselves into oblivion and put every citizen they could in uniform, but they just don't have the population to credibly deter an invasion by a major power. The only countries without standing armies today are very small countries that, due to their population, are completely dependent on outside allies for their defense.

They should've banned it in the Constitution then. Though given how bloodthirsty Americans turned out to be, we probably would've amended it anyway.