Mine is doing fine after four decades. It even has a few of the original components. The front hub is still French, but I found I could re-grind the cones to avoid a re-lacing job. I have gone through a few front rims, but not the year that hub went rough. A bicycle is like a hammer or an aircraft - the basic identity has no set lifespan. There are DC-3s still making a living, but some have turbines.
I'd far rather ride than shop.