Hi Urbanhermit,
I think you are right. There are not many Caucasion women wearing their hair that long.
Also I think that they do not find it very practical and maintenance is high.
Maybe there is also another thing. The shampoo's here in Europe contains a lot of chemicals. I noticed that for myself and buy myself soapfree shampoo. The commercial shampoo's are bad for your skin and therefore for your hair.
But anyway, I always love to go the city for their there is more difference in cultures and I can see ladies with beautiful hair. (Did not see over buttlength though)