By the 70's it had skyrocketed and in the 90's it became high because a person had married and divorced 2 or more times. We had allowed it to become too easy to divorce and we allowed it to become acceptable. People discovered it was easier to walk away and try again than try and make the first one work. Yes, there are times a divorce should happen, like in an abusive marriage or where there is adultery or additions. Not all divorces involve these problems and some that do could be prevented by communicating with each other on a regular basis.
Some people get distant and then start imagining the worse of their spouse.
Maybe this is part of why Paul said cast down all vain imaginations. Let's see some of the things that cause us to grow apart. Work Sex Career Hobbies Communication Addictions Lifestyle changes The above are the main ones that can cause a marriage to grow apart. Work, too much, too many hours, too many days, not enough time to spend with both wife and job. Now if it is both sides and they are clear about it then ok, but if one side is wanting and the other does not, well, some people are just human.