The area sits in a cold-moderate climate band, and the swing between a humid summer and a dry, cold winter does real work on hardware over a year. Grease that's fine in July stiffens by January, and newer opener gearboxes - many of them plastic-geared to run quieter than older metal units - are more sensitive to that stiffening than the heavier gear sets found in older doors.
Because most Nolensville homes were built well after 2000, the doors we service here haven't had decades to reveal slow wear the way an older home's door has. That's a double-edged situation: there's less accumulated damage to find, but also less history to tell you something's wearing out before it fails. A roller that's quietly shedding nylon doesn't announce itself until it jumps the track.
We don't see much of the original hardware failure that shows up in older housing stock - bent track from decades of settling, or torsion springs rated for a door weight that's since been swapped out. Here it's closer to component fatigue on parts that are still within their expected working life, just getting less lubrication and attention than they should.