I'm sorry to say there is not much science in this article. Human sex, attraction and child-rearing are much more complex and nuanced than your article implies. There is much debate around the topic of why men and women choose partners, now and in the past.

Please quote your sources that support the view that (in terms of evolution) men want to impregnate as many women as possible but women are more choosy - I'd be surprised to see any literature that back this up at all. This idea appears to be based your own 'common sense' observations.