Johns Creek sits in a cold-moderate climate band, which means the garage sees real temperature swings between winter mornings and summer afternoons. Steel springs and cables expand and contract with that swing, and the repeated flexing is what fatigues the metal faster than a flat, mild climate would. It's not dramatic weather - no named storms needed - it's just daily thermal cycling working on hardware that's already decades into its service life.
Pair that climate pattern with the housing stock: Johns Creek's homes mostly went up in the 1980s and 90s, inside the broader 1951-2012 build range for the area. That means a large share of doors are carrying original torsion springs and cables that have never been swapped, on tracks and brackets that have taken thirty-plus years of lift cycles in a climate that doesn't let the metal sit still.
We also see opener logic boards aging out around the same time as the mechanical hardware, since most homeowners bought the door and opener as a set when the house was built. When one fails, the other usually isn't far behind.