OK
Let's try this another way:
Throughout the years, I have asked some people here in the USA why they own guns or want to own guns. An overwhelming majority have come back to me with something in line with "because I am an American, and I have the right to."
It really irked me that most people I asked gave me a non-sense reason as above, and that is what I was referring to when I responded to the OP.
You see this perfectly illustrated in the response that was given with the phrase "Molon Labe." Which I interpreted as "it's my right. Go try to take it away from me."
That's exactly what it means - since you're so "all-knowing", where did the phrase come from?
As for the error in first/second/third amendment or whatever it is, it is irrelevant to me as I am not an American, and haven't studied to become one.
To understand the reasoning behind this Right as written into the US Constitution, Second Amendment, by the Founders, you have a helluva lot of reading to do - trying to explain it to your kind is a waste of effort.
I have no problem with debating any issue with an admitted foreign subject but do try to learn a bit about your opponent's point of view before you open your yap, proving yourself a self-righteous douchenozzle.
Now, back on the subject....
Why do YOU own a gun? (if you do)
I own weapons because of people like you who would impose Tyrannic Rule over citizens who, after being disarmed, are no more than subjects. I took an oath, as did many other years ago, to, amongst other things, "Protect and Defend the Constitution of the United States against all enemies, both foreign and
domestic".
My country and its values are under attack from within and without and that oath did not have with it any expiration date, as I recollect.
Since you're not "studying" our Founding Documents", I offer the following for your reading from our Declaration of Independence:
"Prudence, indeed, will dictate that Governments long established should not be changed for light and transient causes; and accordingly all experience hath shewn, that mankind are more disposed to suffer, while evils are sufferable, than to right themselves by abolishing the forms to which they are accustomed. But when a long train of abuses and usurpations, pursuing invariably the same Object evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new Guards for their future security."
Our Founders knew well that times would change but that Human Nature would not. They foresaw those, like you, who would try to tear apart what they created and wrote the Second Amendment to deal with the problem.
It's understandable why socialists, liberals, communists, social democrats, et cetera and et alia don't like their subjects to be armed - the British thought little of it in the 1700s and tried to disarm the Colonies. Freedom won, however, and probably will again if tested.
Concern yourself with your own country.