I believe I understand your intentions with this post. I do have to respectfully disagree with many of your points, though. Please be careful not to place the majority of the blame on the wife. Marriage is a two-way street (with an unbroken streak of Jesus running down the middle!) and your post just leans very heavily on the "slow death of marriage" being the wife's responsibility because she puts more effort into motherhood than wifehood. Your post begins with the statement that the husband works harder to provide for the family. That's fine and completely valid. But the rest of the post puts the blame squarely on the wife. SHE is too busy with the children. SHE transfers her passion away from her husband. SHE treats him like a mother would. SHE forgets about him. And all of a sudden, his role in the sad death of the marriage becomes that of the victim. I'm sure that this was not your intention, or I hope it's not, but from reading your post and other similar posts on my journey to finding out what "Biblical Marriage" means, it's just what it ends up sounding like. Someone even more cynical than me may be so bold as to say it sounds like it's the decision to have and raise children that is to blame for marriages suffering. No children = no obstacles on the happy marriage journey. Obviously that is absurd, but that's why it's so important to take great care in how we rationalize the painful and devastating end of a union.

Going back to the hypothetical scenario in your post, please remember that husbands are in this just as much as wives are, and while wives may certainly transfer passion from their husbands to their children, it is just as easy and probably just as common for husbands to transfer their passion from their wife to their job. Just as how a wife spends the majority of her day with the children, the husband is spending that same time with his career and all the relationships that come with it. It becomes another life, one that the wife and children simply are not a part of. If true Christian marriages are based on a husband and wife being different but equal, then we have to stop acting like the husband is just a victim, an innocent bystander when things go south. It's an insult to both parties.

I'm not trying to say that we need to start blaming the husband. This isn't and shouldn't ever be about blame. In the blame game, nobody ever wins. I believe that just as marriages are about two people who love each other, maintaining and preserving that marriage needs to be about two people having an equal stake in its success. As soon as we start blaming the husband OR the wife, we negate that crucial aspect of marriage that we fight so hard to live up to. So maybe the conversation needs to entirely stop being about "how can the wife keep her marriage from falling apart?" and start being about "how can a husband and wife keep their passion for each other alive when real life starts to creep in?" I think that is a better starting point for building more solid and healthy marriages.