It doesn't matter what the weather is like now. Evolution took place thousands, if not millions of years ago.
There is no doubt in my mind that our hair evolved to deal with a hot, humid climate. It shrinks up to the head, is fluffy and light, and doesn't retain moisture a lot. Can you imagine long, heavy, straight, greasy, water-retaining hair down your back in a hotter than hot, wet environment? Wouldn't work at all. You'd probably die of heatstroke. And it must have been hotter where we evolved than where any other race did - that could be the only reason why we produce so much more melanin, which makes our skin dark - it protects from the sun. In my experience, native Africans are ON AVERAGE darker than native Asians or South Americans (e.g. the tribes in the Amazon.) That suggests that there was a lot more sun where they were originally.
Ummm.... Itss not beyond my imagination. I consider kinky hair to be quite attractive. My favourite is curly or wavy hair, but kinky hair beats straight hair in my book any day. I can think of a couple of people on this board who are stunning with their kinky hair, and just looked like "meh" - any other black girl - with their relaxed har. My hair is recently relaxed, but all I would ask for to keep my hair natural is no shrinkage, and no tangles when it gets long. I still miss the way it looked and felt.
I just don't understand the worship of straight hair I see among so many on this board. Most of what I see on English people is nothing special.
erplexed