The smaller the penis...
I lifted the first map from http://www.chinasmack.com/ .
As the comments thread went from admitting less length to saying that Koreans were the smallest - most comments then shifted to noting that Asians may be smaller but at least they're smarter.
If having a 'schlort' instead of a schlong causes one to increase his IQ to improve his chances of finding a mate - what are the other factors in human evolution?
While 'looks' are subjective, these areas are said to have the largest concentration of attractive people.
Maybe a shorter lifespan causes one to breed like a May Fly to increase his chances of producing viable offspring.
It seems to me that the countries with smaller average penes are also the most 'civilized'.
All this to say, 'Civilization' (and it's harmful effects) is largely an effect of Penis Envy.