Most of the housing in this stretch of the collar counties went up between 1938 and 2003, with the median build year sitting around 1976. That means a huge share of garage doors on the road right now are original or close to it, and they're all aging out around the same time. A door built for a 1976 opening was almost never insulated the way current code expects, and the track hardware from that era wasn't sized for the heavier, thicker panels sold today.
On top of the age problem, Naperville sits in a cold-moderate climate band. A single-layer steel door with no foam core does fine in a mild climate. Here, it lets cold air sit against the wall that backs onto a bedroom or laundry room, and condensation forms on the inside skin all winter. That's not a defect - it's just a door built for a different climate doing what an uninsulated door does. Once a homeowner adds a heated garage, finishes a room above it, or just gets tired of a door that won't seal at the bottom, installation stops being optional and starts being the fix. We see this pattern across the older neighborhoods built in that 1960s-through-70s wave more than anywhere else in the area.