Apparently this may have something to do with the women not taking the pill. Something that country and more traditional women don't do.
And I think the women intuitively understand that the pill gives them an edge at catching the men, but what they don't notice is how it makes them less capable of bonding.
Oh yeah, that's a point. Look around at the birds where you are. Jackdaws, Pigeons, Doves. Many examples of far simpler animals that have life pair bonding. Humans have this capacity too, if you don't poison their hormones.