I have to say that there is something to be said for the intrigue factor here though. Simply because they are so unobtainable, one feels compelled to "try"...a twist on the forbidden fruit logic. I would suspect that the very same thing that drives members here to break past their genetic limits would also play a role in most of us applying that same tenacity to one or more aspects of our lives as well. For daem, and myself as well, a girl that we supposedly "can't have" we then want to have, solely for that reason. I've taken more than a few faceplants in the process, but did manage to land one such girl...and you are all correct...very high maintenance, very demanding, but it had to be done to satisfy my curiosity.
As a sidenote, I suspect that more of these girls than we suspect are fairly obtainable, as, in my experiences with female friends (and for some reason I've always had more female friends than male because I got sick very early of the male super-competitiveness that seemed so perpetual) "PGS" (pretty girl syndrome) is a VERY real affliction indeed.