The evidence that faithful LDS couples stay married and seemingly stay happily married seems to contradict your opinion.
Leaving aside the “seem happy” component, because that is so subjective, notice how you had to specify “faithful” LDS in your response. I recently read that the divorce stats for mixed marriages with an LDS is 40%, second only to the failure rate for mixed marriages with a Jewish person, which is 42%.
What I think this indicates is that LDS marriages are only “good” and “strong” when both people are active LDS. As soon as that parameter is lost, the divorce rate skyrockets – that leads me to question just how good and strong those marriages ever were in the first place.
in my opinion, marriages that are truly good, truly strong, are marriages that can weather the changes and challenges of life. People rarely stay the same throughout their lives. Our ideas change. We change in some ways. If a marriage can only remain intact if both partners don’t change their ideas about a certain ideology, I think it’s built on a sandy foundation.
The reason I don’t think LDS do a good job preparing their kids for marriage is that they totally stigmatize ANY sexual release, including masturbation. The end result is that you have a bunch of young adults who are so sexually frustrated and needed that they lose their common sense. They marry people they’ve only known months. They marry people they
barely know. On top of that, you have the teaching that this is a decision that can be made through revelation, an incredibly vague process very susceptible to emotions and internal states. Throw in the teachings of some past leaders that the most important consideration is strength of testimony, and you have a bunch of kids who end up marrying someone they can only remain married to if they both continue to believe. And face it, that belief provides a very strong disinclination to divorce due to the stigma attached to it – even if the couple isn’t that happy. Even unhappy couples can put on a good face at church.
If any of my kids decided to marry someone they’d only known a few months, I’d freak out. But this is very common within the LDS culture. I don’t think there is any way to put a good spin on that.