We can argue that it should be, but now we're talking about an ammendment, which is legally necessary and the real conversation the nation should be having.

*I don't think it could ever qualify as a right. Rights are negative, not positive. You could not guarantee the right to an abortion because now you're guaranteeing someone to the right to have someone else do work for them. Instead, it would need to be enumerated as a negative right, meaning that there would be federal protection against the outlawing of abortions.

Militia does not mean standing army. From the Supreme Court Heller decision https://www.supremecourt.gov/opinions/07pdf/07-290.pdf, page 2:

"The “militia” comprised all males physically capable of acting in concert for the common defense. The Antifederalists feared that the Federal Government would disarm the people in order to disable this citizens’ militia, enabling a politicized standing army or a select militia to rule. The response was to deny Congress power to abridge the ancient right of individuals to keep and bear arms, so that the ideal of a citizens’ militia would be preserved."

You can read pages 1 and 2 of that decision to see the summary of the Supreme Court's argument for why 2nd Amendment rights are individual rights.

"United States v. Miller, 307 U. S. 174, does not limit the right to keep and bear arms to militia purposes, but rather limits the type of weapon to which the right applies to those used by the militia, i.e., those in common use for lawful purposes."