I didn't buy and subscribe to The Double Gun Journal with the idea of selling them.
I got them to read, learn, and enjoy. I'm always amazed, when I re-read the old copies, that I find certain things that maybe didn't interest me so much 10-15 years ago, but are very interesting now. When I am old and decrepit, and unable to hunt or shoot my doubles as much, hopefully I will still have good enough eyesight to spend time enjoying my gun library, including my DGJ collection. It's important to keep our minds active.
I recall visiting my Dad one day shortly before he died. He was sitting in his recliner with his lap desk, doing calculations on paper. I asked what he was doing, and he said he was doing calculations for iron loss, copper loss, hysteresis, eddy current loss. etc. in transformers. He was using a pen, paper and a slide rule, even though his Texas Instrument scientific calculator was right next to him. I asked, "Why... are you planning to go back to work?', and he said that he just liked to keep his mind busy and felt it might prevent getting Altzheimer's. He may have been on to something, because he was sharp as a tack. Use it or lose it.
I assume my DGJ's will still have some value to someone after I croak. That's for my heirs to sort out.