Why would someone think that? (That was a rhetorical question there...they are libs, and that is enough)
Anyone could own a gun in the 18th century in the colonies, if I am not mistaken. Why would they not think everyone should have an unregulated right to own a weapon, if they did at the time?
You are not mistaken. Read James Madison’s Federalist 46 and the
Second Amendment will become clear. Be patient.
My conclusion is that the 2nd A is not about militias having access
to weapons but, rather, armed private citizens having the ability
to establish militias.