Sorry for the potentially controversial question: is it normal for less attractive people to settle down with partners they don't find physically attractive?
This happens on a timeline tho. They may have been variably attractive when they got together and just aged and there's more incentive for either to maintain the status quo than cut each other loose
Also eye of the beholder. Nobody is inherently attractive, they just sometimes have more qualities embodied by the culture/society/species/individuals' conventions of beauty and attractiveness
Yeah - husband thinks I am, in his words, "smoking hot" but I think he sees with the eyes of love, not a normal critical eye. I'm confident enough to move around in the world without worrying about looks but no way near "smoking hot", lol.