Most of the housing in this service area went up between 1962 and 2005, with the median build year landing at 1983, and the bulk of it dates to the 1980s and 90s. That matters for rollers because a door built in that window almost always shipped with steel, 7-ball rollers running in a raw steel track, not the sealed nylon rollers that show up on newer installs. Steel-on-steel wears the roller stem and the track lip at the same time, so by the time a door from that era is 30 to 40 years old, you're not looking at a fresh set of rollers on a track in good shape - you're looking at both worn together.
The cold, moderate climate here adds a second layer. Grease on steel roller stems thickens in cold weather, which makes the door bind slightly on the first pull of a cold morning. That extra resistance is exactly what snaps a roller stem or knocks a roller off its track. It's not a dramatic failure - it's a slow one, and it shows up as noise long before it shows up as a stuck door. On a house with original 1980s hardware, that failure is baked into the age of the parts, not bad luck.