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NotWal said..
I think there may be a sexual selection pressure towards taller men.
See, this is where this sort of stuff gets interesting... the social aspects of this come into play.
Okay, presuming the sexual pressure towards taller men, does this translate to women finding taller men that will raise children with them? Maybe, maybe not.
Is it likely that ALL women will have this option available to them? Not likely. If it was, we will all (already) be running around as giants and gradually getting taller to a point where it was something else that was stopping it.
So, you end up with almost everyone in society that wants to, having children, and you will get the same variation. Short women are going to have just as much breeding capability as anyone else, and short men will find themselves selected as a mate for other reasons, even if it came down to supply versus demand.
Sexual selection towards taller men is only one of the attributes that are going to be included for selection of a mate. I agree that it is one, but then lots of other factors come into it. Reliability? Income producing potential? Lack of aggression? Aggression? Physical fitness? Intelligence?
Also you have to counter the breeding potential of taller women? Does this turn out to be a negative that then affects future generations?
It would be interesting to see if there was one consistent trait that people select against in modern society.