Here's an uncomfortable thought: an effective 1-to-1 mapping between men and women probably doesn't exist. The fact of the matter is that women are primarily interested in a top smaller percentage of high value men (this is called hypergamy). This smaller group of desirable men would most like to have multiple mates (this is called polygamy). Marriage, and the accompanying culture and customs, 'corrects' this by tryi…
This is such a pithy statement, used with such simple compelling force, that I applaud it even while disagreeing. Some points that counter this message:
1) What percentage of partners that end up leaving the marriage do so with another partner lined up?
2) Of the percentage that do not - a sizable set I would assume - how many exited after long-term (years?) relationships?
3) Of the percentage that did - another sizable set I would assume - what caused the reasoning process to take so long? Why didn't they conclude they could do better earlier?
I would argue most people go into marriage with at least some amount of good faith effort to make it last. Why do they make such a good faith effort in the first place if they are operating as you would say?