Debating ancient infanticide psychological conjecture and hard wired behavioral theories to kill weak offspring does not compute with society today by any stretch of the imagination.
Most abortions today are more along the thought process of "Oh shit, I don't want no babies! We was just fuckin'"
Two totally different apples altogether and theories on acient practices do not hold merit today. At least not in societies where people post on T-Nation all day.
To follow the eugenics line of discussion will only lead to Hitler.