As others have hinted, I think the question is being posed backwords. Given the current incentive structure, the wonder is not that so many men are refusing to marry, but that so many are still getting married.
My motivations for getting married were largely religious; the particulars need not concern us here. My motivations for remaining married include the original religious ones, but also a strong sense of duty (not necessarily religious in nature) towards the children of my marriage and also a pragmatic concern with the economic ruin that would follow divorce.
Some of the talk here suggests that your readers feel marriage was once all about the man and the woman and has mutated to being all about the woman. In fact, marriage is mostly about the kids, as it pretty much has always been. From that perspective, I can only agree with teh commenter who said that Wstern civilization is in trouble. We are in free fall, and the pavement is coming up might fast.
