Before anyone makes any assumptions, allow me to preface my comments by stating that I do not care whether US citizens habitually carry guns, or indeed, if they go around shooting each other in the face (provided always that my many Americans friends are kept safe). However, I am of the opinion that a population armed with hand guns or rifles is simply not capable of effectively opposing a properly trained and equipped national army to the extent of a successful armed insurrection. So that interpretation of the purpose of the 2nd Amendment is not supported by logic.
The situation which might lead to such insurrection is likely to be incremental, and by the time bullets are flying, the lines of demarcation would be clearly drawn. The argument that soldiers would not fire on their own people has some value under certain more neutral circumstances, but the process of demonisation of both the 'loyalists' and the 'insurrectionists' will be well advanced by that stage. The opposite side would be seen as 'the enemy' rather than as errant members of one's own community. The military will have little hesitation in following orders to 'open fire' on the rebels. The events of 1861 to 1865 in the USA, and 1642 to 1651 in England, leave us in little doubt as to that.
The US armed forces are the most powerful in the world, and given a determination to quell what will be seen as high treason - will quash any such armed insurrection in very short order. Make no mistake about the matter - the insurrectionists will be seen as 'enemies of the people', and irrespective of how many side arms or rifles they possess, they will be captured or killed.
Furthermore, if the vitriol which has recently poured forth from both sides of the US political spectrum is any indication, you are a community tragically divided. And what may be seen as governmental dictatorship by one side, is as likely to be viewed as acting in the general welfare by the other. So the concept of the entire US populace fighting as one body against the government forces is a highly unlikely one.
So I regret to disabuse my friends here of the idea that their guns will ensure their freedom from governmental control. Only a civilised and democratic society will do that.
As to the desirability (even necessity) of carrying side arms for personal safety, I doubt someone like myself (who has grown up in a society which suffers approximately 50 deaths - including suicide, accident, manslaughter, and murder - from firearms per year, as opposed to 30,000 in the USA) can contribute much which will be meaningful to the debate (at least in the eyes of gun-supporting Americans). It is a matter of horses for courses, and in the UK, where not even the policeman on the beat is armed, the majority of the criminal element sees little necessity to obtain a firearm. In short, if some stranger breaks into my house, I assume he is after my ipod, not slavering with the specific intention of ravishing, killing, or dismembering me.
In the USA, where every second person, and his dog, seems to be armed, I can see the concern devolving about self-defence. These are societal, rather than absolute, imperatives, and where sociology has evolved to the point whereat it is no longer necessary to survival to go armed - we do not. But what works splendidly in one society, may not in another with different values. Yer pays yer money, and yer makes yer choice! :mrgreen: