The lead in to this article from the Telegraph is that couples that share household chores are more likely to divorce, suggesting that it is the sharing of chores that leads to divorce. (I would note that this study is from Norway, so it may not be applicable to other countries or cultures). But, when you dig deeper into the article, you actually find this:
But the deeper reasons for the higher divorce rate, he suggested, came from the values of “modern” couples rather than the chores they shared.Evolution in action.
“Modern couples are just that, both in the way they divide up the chores and in their perception of marriage” as being less sacred, Mr Hansen said. “In these modern couples, women also have a high level of education and a well-paid job, which makes them less dependent on their spouse financially. They can manage much easier if they divorce,” he said.