What happens to me I will sell a gun I think I am tired of and won't be using then a couple of years later am sorry I sold it. I've done it a number of times. Yes a gun is just a gun and they make lots of them but someone else's gun isn't the same as the one I had. I might add different grips and do a trigger job is a given except on defense guns. So my guns are personal to me. I have a friend who has never sold a gun and doesn't regret it even though some haven't been used in a couple of decades. Sell them if you want but sell them to a friend with the agreement you can buy them back.