In a private chat, I wrote that joint projects completed, and shared hardships, were "marriage-lengthening, and marriage-strenghtening." I brought it right here to save the phrase.
Partnerships and teams in the family
Sound File, and notes; second item there.
Spouses Unschooling can make us better partners!
Don't let unschooling ruin your marriageSome reasons people divorce and other articles
In a recent American TV series called "The Good Place," my favorite character is Chidi. He has a memory of persuading his parents not to get divorced. He had visual aids.