I used to be among that group who intuitively knew there was a rational basis for the 2A but lacked the foundational understanding of U.S. Constitutional Law to articulate it clearly. 

My edumacation was assisted greatly by joining Right Minds and reading the posts on 2A issues.

The U.S. Constitution is an almost -unfathomably masterful, exquisitely-designed document which is, if enforced as written (backed by the Federalist Papers) an efficient bastion against the tide of chaos/slime that ever seeks to engulf the USA.  

Trying to "improve" the Constitutional protections of 2A with embellishments, is like chipping graffiti into a flawless, rock-solid concrete wall, thinking they "strengthen" it whereas in realty they only etch small cracks/fissures on the surface of what is already an unassailable, solid, permanent barrier.