MC phono cartridge lifespan (when not using)

Gary, my bad. I had no idea there is now a low output Glider. None of my remarks would apply therefore.

I generally have had great luck with aged vintage cartridges, particularly MM and MI types.  But one could argue that I have no idea how those same cartridges sounded when they were brand new.  Nor are my ears and brain in the same shape they were in 30 years ago and more.  Nor do I have the same equipment I had back then; better stuff now.  I have two cartridges that I bought new, a Koetsu Urushi, now about 8 years old, and a Grado TLZ, now probably more than 30 years old.  I think both have lost a step or two or three over the years, but is that due to ordinary wear due to heavy use or to aging per se?  Quien sabe?

PS. I don't want to rain on anyone's parade, but I think the Glider is mediocre at best.  I have owned two and still have the second one I bought.  It would be on the bottom of my list of all cartridges I use now, if I used it at all, which I don't.  In general, I have not liked HOMC cartridges nearly as much as LOMC and MM/MI types. I have another HOMC, a Transfiguration Esprit, which I found to be superior to the Glider in all ways but still not up to my LOMC and MM/MI favorites.