A house built in 1987 has had roughly 35 to 38 years for its original torsion spring to cycle through winter contraction and summer heat, and most residential torsion springs are rated for somewhere around 10,000 open-close cycles before metal fatigue takes over. If nobody's replaced it since the house went up, it's well past that. The moderate heat band this area sits in isn't brutal on steel the way a true desert climate is, but summer heat still softens the temper on an old spring a little more each year, and that's on top of decades of straight mechanical fatigue.
Ennis households run a median income of $72,772, and what we see most often isn't neglect - it's a spring that was fine for thirty years and then wasn't, with no warning in between. That's just how torsion springs fail. They don't loosen gradually like a garage door track can. They hold full tension right up until the coil cracks, and then the door won't lift at all, or one side drops and jams in the track.