Housing in this part of Maryland was mostly built between 1951 and 2015, with the median landing around 1984, and that detail matters more than people expect. A door and spring system installed in the 1980s was built to a lifecycle that's long since expired - most torsion springs are rated for somewhere around 10,000 cycles, which for a daily-use door works out to roughly 7 to 10 years. Plenty of houses in this area are three and four spring-generations past that, still running on whatever was last swapped in, and often that was years ago.
Then there's the cold. This region sits in a severe winter climate band, and steel behaves differently at 15 degrees than it does at 70. Cold metal is stiffer and more brittle, so a spring with a hairline fatigue crack that would have held on through October finally lets go in January, usually on the coldest morning of the week, right when the garage is being asked to open for a car that has to get out.
It's the combination that does it - aging hardware from a building boom that's now 40 years behind us, meeting weather that stresses steel at its weakest point. Neither cause alone would produce this many late-night calls.