I found what I consider to be many many flaws in the authors logic and stopped reading on page 10 and went to skimming.

The author does see many more things about women than most, and is willing to spell out the obvious but often unspoken truth: women choose - they are the deciders. And he also says really dumb things like "Men are supposed to have authority over women ..."

wtf?

There is no discussion of the large number of polygamous societies, all the polygamy in the bible, etc. etc. - he is stuck in some kind of christian (?) 1930s (?) moral framework about how it is supposed to be.

He ignores the fact [?trend?] that as income rises, the birthrates fall. I believe this is true worldwide, look at Japan, a very monogamous society, their birthrate has been falling steadily for something like 30 years and is now below the rate needed to sustain their society.

It seems to me that nowadays women don't need men as much as they used to - since they have far greater economic power than 50 years ago - far greater access to the work place (but not yet parity in compensation). Since the models of man/woman relationships that we have were designed by and for those in power (largely men) and since women are far more independent they don't see the need to strike what they perceive as bad bargains.

My personal experience from the community that I live in and the relationships that I see is that most men don't [in general] act in ways that gratify women, so women don't have that as an incentive to keep the guy around. As a generalization, the men would if they knew how, but they don't, and the women (as a generalization) aren't telling them.