There are also sociological reasons in addition to spiritual ones. The divorce rate sky rocketted after the rise of the feminist movement and its effects on society and law. It used to be if women wanted to take out loans, the husband had to co-sign, and husbands were given some legal financial responsibility over their wives. Divorces were only granted if there were grounds for it.
Now the power has flipped. Now, either party can sign loans, but anyone can just up and file for a divorce without grounds. There may be a delay and legal hoops, but as far as I know, all states allow no-fault divorce (or call it something different.) Then the courts tend to give the children to the wife. Alimony is not as big of a deal as it was in the past, but some states may still allow it. But the percentage of no-fault divorces filed by women is between 60 and 70%. Many women, if they divorce, are incentivized by having power over the children and a steady stream of funding from their ex-husband who they force the unilateral divorce on, in the form of child support which helps support their lives. Overall, divorce is generally a value-destroying prospect (costs for two houses instead of one--or a guy living out of his car or parents' basement and the woman in the house.)
In past centuries, most people were farmers. History may focus on Kings, Queens, counts, barons, etc. But most people were not rich and lived in households and the household was the center of economic activity. There were professions and trades, but on a farm, husband, wife, and children work together to produce family resources. Then we had the industrial revolution which brought the people to the cities. In the US, in the '50's there were lots of housewives. Then we had the feminist movement, after which more women were able to work and support themselves, with a philosophy telling them they needed to to be fulfilled. This was followed by divorce.
Women being able to earn money apart from their husbands, without husbands having any legal authority over them, combined with the sexual revolution, and no-fault divorce seems to have led to a lot of divorces in society. Many of the churches have adapted their teaching and doctrine to fit with the widespread divorce.