I'm not going to even try going back through all the prior posts here, so there is a chance I could be repeating someone else. If so - sorry about that.
I am envisioning that I have built a new weapon in my back yard. It is a perfect weapon that will absolutely obliterate anyone that dares to step on my property and threaten me and mine. Even better, when I leave home I can stick it in my pant's pocket and be sure that anyone that attacks me will surely die. My weapon is entirely new, being based on Dark Energy and therefore nobody has gotten around to passing any laws against it. Besides, I have a powerful lobby now working to make sure nobody ever does.
My weapon does have some unfortunate side effects. It is much more likely to kill me and those I love as any criminals. And there are no fail safes built into it to keep anyone else from using it, maybe in ways I wish they wouldn't. And I am certainly not required to lock it away or to keep it deactivated until I need it. In fact, I alone get to decide if it is safe and when I can use it. Well, to be entirely honest, one of the unfortunate side effects is that it is a doomsday device and will end all life as we know it. I say that that's true for the person at the other end of any lethal weapon, so why should mine be any different?
HEY, it's my RIGHT to have it because the Constitution says I have the right to own and bear arms. Well, and some other nonsense about a well regulated militia, but I don't care about that part of it.
George (my neighbor) seems to be unhappy about my doomsday device. He pointed out that it could kill him and his family if I ever used it. I told him, "Them's the breaks! Not my problem!" Because my right to own it superseded whatever silly little rights to stay alive he thinks he should have. My wife is a little upset that just because I beat her and the kids up now and then that I am allowed to keep my weapon. Something about being worried I'll use it on her! I won't EVEN get into what my shrink said! She doesn't get that everyone is out to get me - including the government. So, naturally I think it's sure a good thing I can just blow up the world if I ever feel like it.
Now, George (you know - my neighbor) was trying to tell me I could just use a weapon that wasn't QUITE as dangerous and still be safe. SILLY MAN! What if the entire world turns against me? It COULD happen, you know. So, I need a weapon that will take out the whole world. This idea of his that I should be able to get by with some piddly little less lethal weapon or that I need some safe guards on what I can own or use against other people is nonsense. It's my RIGHT, after all! And, of course, the world revolves around me.