I get the feeling like we are talking past each other now ... I get all your points. Just to make this clear, I am not against the 5.56mm or .223 or what ever.
All I am saying is, that the 5.56mm and the .223 which was inspired by it, have their roots as military round, and that it is still a very popular choice for the military - I am aware about the difference in 5.56mm and .223. Considering the history of the round it was an evolution based on strict military requirements which have been born from the idea of assault rifles and assault weapons, which makes it simply very effective in military terms, which is the idea of quickly neutralising targets. I don't see why that is a problem to accept. Because those are the facts. The 5.56 and the .223 are very efficient for self defence. Would you not agree? And if that is true, then you have to ask your self why. And that is because they are relatively light weight - compared to 7.62 and bigger rounds, fairly accurate and still have decent enough power.
And I am also saying, that the .223 and the 5.56 are NOT the most popular rounds in either hunting or sport. I never said that it was NEVER used for those cases.
Again! I AM NOT OPPOSING THE ROUND OR THE (some) WEAPONS THAT USE IT!
Many guns are weapons of war, yes. I don't see this as an argument AGAINST civilian gun ownership. I see it as an argument FOR civilian gun ownership. If a population does not have the tools of warfare, are they truly free or sovereign at all? If the state has a monopoly on violence, who can stop them aside from other states? Private citizens should have access to killing machines. To kill. To kill threats, be they foreign invaders, or domestic threats. Domestic threats such as criminals, terrorists, animals, or potentially, corrupt/tyrannical governments.
TLDR; Yeah, guns are intended to kill. That's why they're so fucking rad.
I would argue yes, because there are many nations where the population has access to many weapons, but no one would consider those nations as free societies for their citizens. Take Somalia as example. Citizens might use weapons to protect their sovereignity, but a sovereign citizen needs more then 'just' weapons. For example, a legislation and government that actually supports his cause.
Guns alone, can't make you more soverign or free, just as the constitution alone can't. Only people can do that. Because it is people that use weapons, constitutions or laws, and it is people that give those things power.
And you also don't want the monoply of violence in the hands of citizens, or you will end up with mob rule. You always need some control on a higher level, one way or another. Even a militia will have SOME chain of command, where people decide to have someone in charge.