Most houses across Punta Gorda's twelve named neighborhoods went up between 1971 and 2003, with the bulk clustered in the 1980s and 90s. That means a lot of doors out there are still running the torsion spring and steel roller setup that came with the house - thirty, forty years old in plenty of cases. Springs are rated for a set number of cycles, not years, but age still matters because of what's around them.
Punta Gorda sits in a mild temperate band, which sounds like an easy climate on a garage door, and mostly it is - no deep freeze, no wild swings. But mild and humid isn't the same as dry. Galvanized coatings on older torsion springs wear thin over decades of that steady moisture, and once the coating goes, the spring underneath starts to pit. A pitted spring doesn't announce itself. It just gets weaker and finally lets go, usually while you're standing under the door.
Steel rollers from that same era have the same problem from a different angle: no grease left, dry steel spinning in a steel track, wearing both down together. Neither of these is dramatic. They're slow, and they're exactly what you'd expect from hardware this old sitting in this kind of air.