edit- follow up question
“a well regulated militia”. since the amendment was passed, and since the US has a military, has there even been a militia? would you trust your random neighbours loading up and marching against something? or would you expect law enforcement to crush it?
seems like the amendment has become “the locals can have guns and murder each other”. Nothing to with a “militia”; or defending your country.
The country was founded on armed rebellion, and the framers recognized it might be necessary again in the future, so they enshrined the right to an armed populace almost immediately.
There was also the very real possibility the Native Americans, the French, the Spanish, the Portugese, or some combination thereof would invade.