I have to say that my view is that times are very different now than back in the day. Arranged marriages back in the day were the norm and divorces were embarrassments. You stayed together no matter what.
Today people get married young, sometimes still shotgun-type reasons. The reality is that when you’re young you are not experienced and mature enough to deal w/the intricacies of relationships.
Since divorce is not frowned upon as years past, that is an out. But then you find single men and women in their 30’s and 40’s. Does it make them undesireable, or victims of incompatible youthful marriages?
People evolve and grow and change. Hard to impose long term relationships on couples who grow apart, especially when you start out so young. Think about how you were 10 or 20 years ago. Like a different life.