How long do good speakers last?


I just ordered a set of Sonus Faber Olympica Nova Vs, my first foray into nice speakers. I turn 51 this month and am hoping these will be the last speakers I ever buy. But it got me to thinking - how long should I expect these speakers to last? Or any good speakers for that matter? Does the foam eventually break down? Issues with general wear and tear? Appreciate your perspectives!
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It seems that the older Magnepans lasted maybe 20 years or so now or until the wires seperated from the mylar. I have the impression that the newer Magnepans (1.6, 1.7) last indefinitely.  I want to learn about the experiences of other Magnepan owners
Recently inherited our father's Altec "Carmel" speakers from the early 60's and we have a pair of Altec VOT A7-8 from the mid 70's. Both sets of drivers are original and sound like new, while the cabinet finishes are being refreshed and the grill cloth replaced. As mentioned before, take good care of them and they will last a long time!
avitacom

I have 20 year old 1.6's that I push pretty hard in a large room. Not in direct sunlight, but a room where I smoke. No sign of de-lamination. The crossovers have been removed to run active so I can't speak to crossover life.

Jim S.
My Altec's with cloth surrounds are original from late 60's or early 70's, I prefer treated cloth surrounds to even butyl rubber. For foam surrounds, I use mink oil about once every 2 years to keep them pliable.
I seem to have a thing for British Speakers, my original set of Tangent TM1's circa 1976 and replaced with Tangent RS4's from around 1978, I am still listening to them as I write this (Santana Caravanoral), some 40 years or so and still going strong. The drivers are all original and look in great shape, still sound great too. I have tried to keep them out of direct sunlight but they have had a rough journey.

My new adventure in British speakers are a pair of Wilson Benesch Square 2's, which I have had for less than a year, still breaking those in, but starting to come alive. Here's hoping they last as long.