There are many ways to look at it, and I don't think the general topic "safe queens" can so easily be given an answer.
As far as I am concerned, the only reason to keep a "safe queen" is if you plan on selling the firearm down the road.
Here's where I found a different angle...
The gun I got from my Grandfather is a 1921 S&W pre-Model 10 with a nickel plated finish. Shooting it on rare occasions (every few years and no more) is my "schedule" with it simply because the finish is pretty fragile and while shooting doesn't help it and doesn't specifically "attack it",
cleaning seems to want to compromise the fragile, slightly-flaking nickel plating.
My thoughts are that this gun belongs to "me", but also belongs to my family. If anyone in my family wants to shoot it, they know they are welcome to do exactly that.
For my uses? I have three other K-frame Smith & Wessons with which I can launch .38's. Given that Model 10's and pre-Model 10's have been made in such
ridiculous volume, I can even see me spending just a couple bucks and snagging a similar revolver if I want the "feel" of the old lockwork in an old K-frame.
Some guns can be keepers that you don't want to degrade...even if you -NEVER- wish to sell it.
Yours? Easy for me to say,
"well, that's not as old as mine, so shoot it." On the flip side, yours is probably easier to chase down another example of -- to shoot it instead. Or, from another angle... yours is a -LOT- more durable than mine, and shooting it will probably degrade it's condition much less than mine.
I say it's a decision for you to make entirely. And not knowing the relationship you had with your Grandfather, or what his experience level or love for handguns was...it makes the choice even more difficult to make.
My Grandfather owned hardly -ANY- guns and was never much of a shooter of any kind whatsoever. If he'd left me a dozen guns, maybe one of them would be a little less "precious" than this one seems to be.
If I could write a letter on each one of my guns right now that I hope will be passed on to my heirs, some of them would say "shoot the heck out of this if you like this one!" and some would say, "You should sell this as it's is valuable and I never cared for it much - no sentimental value on this one." Maybe another would say, "this gun has almost no dollar value, but it brought me a heap of joy and you should shoot it until it falls apart, then hang it on your wall."