Accually i think that most of women ( not including some sweet asian babes) are design to have "space" for about 5inch weewee and additional inches is just pain for a girl , and no matter kaukasian, negro, or metis or whatever .
btw. 7 foot european
as far as i've seen average height is about 5,7 feet
I'm 6.2 feet and not seen much persons in my size or higher ( of course they are but nut as much as 5,5-5,8ft people)