As far as pre-nups go, I think they most certainly have their place, for example, in case of a second marriage to direct assets after death to children from the previous marriage, or in case of pretty extreme differences in wealth.
That said, I think the root cause of the decay of modern marriage is that people look at it so transactionally, and adding a pre-nup would only exacerbate that. Marriage is not just living together, it's living your life together. Were we to instill that skill into the next generation, things would get better. Unfortunately, both men and women are conditioned to see if they can do better, elsewhere, on a transactional basis, not on a relationship basis.
