= new reply since forum marked as read
Get the funniest looks from everyone you meet...
Hey, in my line of work, if you don't have a sense of humor, you'll go nuts. 
And there are always exceptions. If you inherited it, though, as a peaceable guy, why did you decide to keep it? From your description of yourself and your life, it seems an odd thing to keep. This type of weapon is the antithesis of peaceable.
As you say yourself, you COULD use that AR-15 to do very violent acts. The fact that you choose not to is laudable, and I sincerely hope that you never suffer an emotional or psychological breakdown that could prompt you to commit such acts. I find that many gun owners demonstrate a certain smugness, in that they are so law abiding and stable that they are immune to mental illness or emotional breakdowns, along with the erroneous belief that keeping guns in safes renders them theft proof.
My intent is not to accuse you, or any individual of "an offense", but to urge folk like yourself to rethink their motives for owning these weapons. OTOH, I would prefer you keep it than sell it to someone who may be more prone to use it. In your situation, I confess I would be tempted to keep it. After all one never knows what the future will bring. I'm glad I don't have to make that choice.
Peace. 
In my hands, I know it is safe. In the hands of another, I cannot be so sure. Quite apart from NICS's go-no-go evaluations, I don't think I'd be comfortable selling a firearm to most people, because I do not wish to be an accomplice, even unwitting, to some criminal act. Certainly not to some random person I don't really know. I would feel some measure of responsibility if it was misused. Same reason I keep the AR.
Why do I keep the AR, even though I haven't fired it? I don't know that I have a singular good answer to that. It has some sentimental value. It has quite a lot of intrinsic value, being a pre-ban AR, actually. So, into a smelter, so to speak, isn't an option I would readily choose. I do own some very similar firearms that I do use, such as a mini-14. It looks totally mild and un-scary to most people, with it's wood furniture, and standard capacity mags. It is functionally identical to the AR, but it weighs more and is longer. So to a degree, I don't consider the AR that threatening either, because its appearance isn't what is dangerous about it. Almost all firearms are dangerous in capable, but mischievous hands. People who aren't very familiar with these firearms tend to under-estimate that, I think. On the subject of gun control, measures crafted to ban that AR based on some criteria like rate of fire or capacity, would cast a net a lot wider than most people seem to think.
What will I do when my faculties fade? Excellent question. Alzheimer's runs in my family. I will probably do what my father did, and pass them on to my son (Not biological! Dodged a bullet there, kiddo! 
), and other family members. If there are no suitable recipients (say, my son has some issue when he grows up, that isn't evident now, like Adam Lanza), then perhaps I will visit a smelter. On that score, I think you are right, I am unusual/an exception. Under the right circumstances I would use a cutting torch on them myself, if I could not guarantee safe storage. Just like I invest in safe storage, and even liability insurance. Not everyone does. I wish more did. That's the sort of responsible gun ownership I try to encourage in people. It doesn't much matter to me if they have an AR or a M4, or an old 1889 Savage .303, what matters to me is their attitude and capacity for good.
How's every washed up fatass who's not in shape to join the military going to have fun?
44%.
