Until a few years ago was listening to a 40 year old pair of Vandersteens, then traded them for a 30 year old pair of Vandersteens.
No longer own them either.
Both sounded and performed as new.
Who knows when they might "wear out"?
How long does it take a decent quality speaker to "wear out"?
After all, they do have moving parts and capacitors. . . .
(I suppose that "decent quality" s a relative term. FTR, I am running a pair of the older B&W 805s, and for all I know, they may not actually meet the criteria of "decent quality.")