In very layman's terms, I've long viewed the original design as the wanting a educated, trained, and armed citizenry that could actually be trusted to act like

In very layman's terms, I've long viewed the original design as the wanting a educated, trained, and armed citizenry that could actually be trusted to act like adults. If needed they could form militias or even organized armies, but the default state is a nation of adults largely just living out their lives with as few government interventions as possible. We've since destroyed that goal. Our education system is trash, we don't train our citizens how to take care of or defend themselves, and the gun debate has largely devolved into "no one should have guns because we have cops and armies for that" versus "I have a right to bear arms so I can keep this oppressive government in check"