gayinterest saidIt's an interesting theory, but...
I grew up living in The Netherlands, USA (Texas), Burma, Pakistan and the UK, attending mostly International Schools represented by students and staff from dozens of countries, religions and cultures. I am the furthest you can be from racist; I experienced a multi-cultural utopia.
Yet, I have sexual preferences. Mostly for men of countries or regions I've NOT lived in.
What don't you get??
It's quite simple - because I spent my formative years in diversely multi-cultural surroundings within many radically different countries I understood from an early age that people are people no matter where they come from; some have wonderful characters and some less so. I do not judge people's worth or socio/emotional compatibility based on their heritage.
But, from a shallow sexual lust point of view, there is a trend that I will find men from certain genetic backgrounds more physically attractive, and there is no shame in this. Just as some men lust over muscular / slim / brunette / blond / tall / short / older / younger men, I often find myself drawn to olive-skinned and hairy men with a Mediterranean or Arabic heritage. And this is by no means exclusive. My partner is actually a pale, balding, not massively hairy northern Englishman.
We don't constantly pick people up on their preference for men of a certain age, height, body shape, hair colour, etc. So why should their genetic heritage be any different?