A lot of feuding "couples" have decided to stay together because they're comfortable where they're at. I quoted "couples" because many of them don't view themselves as a romantic couple or even a couple at all. They are now more like partners or a grade above roommates, who share a dwelling.
I once read through a bunch of comments from men who were asked why they stayed in their tumultuous relationship. Many of the men said that their belongings were already settled in the house, and that it wasn't hard for them to live a separate life from the woman in that house. It was preferred to moving out, living in a small apartment with noisy neighbors, and having to take care of the cooking, cleaning, etc. by themselves.
