Somewhere, the stats show that the divorce rate increased with the passage of the "no fault" divorce, where one can divorce on a whim. That was either late 1950s or early 1960s.
There are "Covenant Marriages" in several states. Interestingly, when they give you a certificate for a Covenant Marriage License, you can still get a divorce, but you pay the laywers 10X more than what you would regularly pay.
But in general, our society is not taught how to be with each other. It's like McDonald's Hack in the Back Christmas new toy gleem that only lasts 24-28 hours.
I will be nearing 4 years of maritial bliss
And yes, my husband absolutely drives me nuts. But, I found that we are so close that if I lost him due to divorce, it will be like my entire insides would be ripped out.
My opinion is it also depends on the belief of the maritial family... My folks have been together for nearly 50 years. And I strongly believe it. Whereas, my brother who is divorced with a son doesn't share my beliefs.