Yeah, lots of gun owners lock old firearms into gun safes, never to be seen by anyone (icluding the owner in many cases) ever again.
Heck, a guy in my re-enacting group owns several crew-served weapons that are functional but has never even thought of firing them. He even owns a M-2 .50 caliber heavy machine gun. I've offered to set the headspace and timing for him (really simple of you have the right gauge to set it, only takes about 10 seconds at the most) to fire the thing, but he has no interest in firing it.
I also know a guy who spent over $150K for a Sherman tank and its restoration. It's only been fired up as a test when it was being restored and getting it onto and off off the 18-wheeler to his place. Assuming the batteries are good, he could fire it up any time he wanted. But he never will. And eventually, it'll need to have the engine rebuilt again from sitting around for who knows how long until someone buys it from his estate once he passes on.
I'll never understand that mindset.
I do, however, know someone who owns a prototype machine gun. I won't go into the details, but it's the onyl one in existence. I can see why that guy never fires it due to its rarity, but he does display it sometimes at shows. I'd also agree if you had the last suviving type of an airplane and you never flew it.
But production stuff, sitting in the dark and never being used?
Man, that doesn't make any sense.