The Founders liked militias, but they also liked an armed citizenry. To them, the two ideas were inseparable.
Gun control advocates love to hate District of Columbia v. Heller, the 2008 case in which the Supreme Courtrecognized
that the Second Amendment protects an individual right to arms. They
may be protesting too much. Federal courts in the decade since have
found many restrictions on the right to own and use weapons perfectly
congruent with that decision. Heller merely says the government
can't enforce laws that prevent (most) Americans from possessing
commonly used weapons in their homes for self-defense