Its interesting to read everyone's opinion on this.
Thanks to the OP for starting it. I also hope he changes his mind.

I have several K 38 Masterpiece revolvers. I have 1 in particular that is about as new as I'll ever luck into. It's from 1966. Hardly a turn line or any other signs of being shot much if at all.
To me, it's like a brand new gun. Its tight as a bulls arse. It has mostly cleaning type marks on it. And yes, all numbers match, including box.

Will I shoot it? NO. I won't. No need to. No need to. I'll keep it as my example of history.
Is it perfect, nope. But probably as close as I'll ever get.
That being said, heres my opinion on shoot them.

The people that say that have " safe queens".
If you happen to find a near new old gun and you shoot it.
Its 1 less they need to worry about in the future.

You just made their gun " more" valuable.

Buy what you like, shoot what you want to.
There's nothing wrong with having a lnib gun.