Most of the houses we work on in Vancouver went up between 1977 and 2011, with the bulk of the stock dating to the 1980s and 90s across neighborhoods like Hazel Dell, Five Corners, and Orchards. That matters because a door installed during that window is now 25 to 45 years old, and the original hardware - galvanized torsion springs, steel rollers, the first-generation opener - is well past its design life. We see a lot of fatigued torsion springs and worn nylon rollers that were never swapped out after the first install.
The other piece is the climate. This area sits in a mild band with occasional freeze stretches, which isn't the brutal cold that cracks steel outright, but it does swing temperatures enough to stiffen grease in bearings and shrink weatherstripping that was already brittle from UV exposure. On a door that's 30 years old, that combination of age and a cold snap is usually what finally snaps a spring or seizes a track - not one dramatic event, just years of wear catching up at once.
If your house is in one of the newer pockets - Felida, Meadow Glade, or the areas built closer to 2011 - the hardware is younger, but the opener logic boards from that era are starting to fail instead. Different part, same underlying cause: the house has aged into the repair window.