This area's climate is mild - no hard freezes cracking panels, no extreme heat warping track rails, so weather isn't usually what takes a door out. What actually drives replacement here is age. With the median house in the service area built around 1981, and a lot of the stock dating from the 1980s and 90s across the named areas nearby, most original doors are running hardware well past its expected cycle life. Torsion springs are rated for a set number of open-and-close cycles, and a door installed when the house went up in the early 80s has been through decades of daily use on the same spring, the same rollers, the same original opener. Add in aluminum or thin steel panels that were standard for that build era, and you get doors that are structurally fine but mechanically tired. That's different from a coastal or high-desert town where you'd be chasing rust or sun-cracked seals. Here, it's cycle count and original-spec hardware that wasn't built to last sixty years, sitting in openings that were framed for it and haven't changed.