Men not marrying? How deep does "the problem" go?

Men not marrying? How deep does "the problem" go?

Is it just the risks of Marriage 2.0 preventing men from rushing to the altar? Is it merely a function of the women available to the average man? Is it the divorce rate? The spectre of lifetime alimony and every-other-weekend-dad status? Or is it a deeper problem than even that?

The Real Reasons to Not Get Married

Look out! It's a Nice Guy! DESTROY HIM!!11!