That wouldn't work so great for men / women who elect to become househusbands / housewives upon marriage. While the other partner spends those 10 years building

That wouldn't work so great for men / women who elect to become househusbands / housewives upon marriage. While the other partner spends those 10 years building their career, they toil away at home cleaning, preparing meals, and raising the kids, only to be left high and dry when their partner declines to renew. Now what are they to do? They have little job experience to build upon. Unless your solution comes with alimony / child support, I don't see how it would work. And if it did, what's so different about it than getting a divorce?