The climate here falls in a mild band with occasional freeze, not the deep-freeze stress that cracks hardware outright. So when a spring or cable fails in Tracyton, it's almost always fatigue from age and cycle count, not weather damage. A door installed in 1982 has been opened and closed something like 15,000 to 20,000 times by now if the household uses it daily - that's well past the rated life of the original spring, whichever type it started with.
The second driver is simply that original equipment from this build era wasn't made to modern standards. Steel gauges were thinner, torsion shafts were sized more conservatively, and openers lacked the auto-reverse logic that's been mandatory since the late 1990s. None of that made those doors unsafe when installed - it just means a door that age is due for a hardware review even if it still opens and closes without obvious complaint.