Housing in Palm Beach averages out to a 1971 build year, a bit older than the 1981 median across the rest of the service area Jupiter Garage Door Co covers. That ten-year spread matters for springs specifically: a torsion spring rated for 10,000 cycles wears out on roughly the same clock no matter when it was installed, but a door original to a 1971 build has likely been through two or three spring replacements already, sometimes with hardware swapped for parts that don't quite match the door's weight.
The climate here runs mild temperate, which is kinder to steel than a lot of the country - no hard freeze-thaw cycle working corrosion into the coil the way it does up north. That takes one common failure mode off the table. What's left is mostly age and cycle count: the spring that's wound to lift a door built decades ago, wearing out the way springs do, regardless of what the house down the street looks like.