Not to throw this towards another wrench in conversation but the "threatening" factor is always there with men, because of a multitude of things including: the hit and run factor, male/male competition (suitors or father/suitor), not the least of which is having a penis. It's precisely this reason why gay men are more repulsive when thought about in comparison to others: it is the harshest +/+ when the other stress complementarity or benign/emotional ("gay" women). 
 
Donna, no one outgrows "good-looking" anything. 
 
What's more interesting to me is that perhaps I am more picky (assuredly am) than most, it seems that a very good looking person can become instantly unattractive just by talking. I know this is the same for both men and women. I imagine a low-achieving male (low salary) who is 9/10 on looks would immediately be thought to be stupid ... and thus instantly less attractive. 
 
Guys have harsher standards immediately for looks. Women have what I would call thresholds, that is, does he pass the question, "Is he bare minimum if the other things are in order." 
 
It's among the most interesting of analyses.

Speaking of dating sites and "sausage fests" (I think the use of that word alone would be a great "stay away" indicator for girl if said by a guy) ultimately it comes down to the two-Ts (the t-test if you will): timing and trust. Guys tend to look at themselves like they look at women which is just a horrible comparison; they don't realize what is most important. Things women care most about physically are height and face, two things which you can't do much about. ONCE you get them interested, then things like body (the things you can work on) or your joke telling ability [which is probably fixed at that time anyway] might start to help. Which brings us to the Ts. Ironically, like the period, the timing factor is crucial, because timing goes hand in hand many times with friends/meeeting places/convergent break ups. Trust as a factor is always right there. People meet at work often, right? School? They are around each other enough to trust and know what each other person is doing. 
 
How many women going out to a nightclub even trust a "good looking" dude? I'd venture hardly many, and considering they are that whimsical the quality probably isn't there anyway. I could go on for a long time with this but rest assured that two people with a great potential for match can be easily sabotaged by dealing with former relationships, significant others at the time, or any other multitude of things [emotions] that ruin the timing. The human animal, indeed.

So can we only predict how genes interact with lower IQs? I would think that it's easier based on the fact that it would common sense to hypothesize that the stronger/mature/loyal the parent-child bond, the greater chance for many reasons evasion of first encounter would occur. Similarly, low IQ parents beget low IQ kids so in a sense poor becomes poorer. 
 
As an aside, what would be considered "extremely late" first intercourse for any given number or types of people (you can throw them out there)??? Is intercourse the only thing that counts, or other types of "sex"?