Plymouth's housing stock runs mostly 1957 through 2007, with the bulk of it built in the 1980s and 90s across the area's named neighborhoods. A door installed when a house was built in that window is now anywhere from two to six decades old, and most garage doors - even well-maintained ones - don't make it that far without panel fatigue, especially on the south- and west-facing openings that take the most sun cycling through a Minnesota year.
The climate here is the other half of it. We're in a severe cold band, and a door built or last replaced before double-wall insulated steel became standard just doesn't hold up to decades of freeze-thaw cycling the same way. Seals crack, hinges work loose in the cold, and panels that were fine in a milder climate show their age faster here. When we install, we're sizing and insulating for openings built in that 1957-2007 stock and for winters that actually get hard cold, not for a generic Midwest average.