Not a dentist but I definitely couldn't see it going away. Also curious to hear a more knowledgeable opinion.

There will always be accidents and need of non-cavity repairs. As a kid I broke a healthy tooth eating Doritos. It didn't make sense to my dentist either. I've broken a less healthy (but repaired) tooth on a candy coated peanut, and one a Twizzler Nib.

I grind my teeth, so everything is being worn and torn at a higher rate. The mouth guard won't generate itself.

Hate to say it, but if I thought my teeth would stick around longer, I'd probably be more likely to seek cosmetic fixes. I'm apparently really hard on them or something.