I'm bit late to this discussion, so forgive me if I cover some of the some ground as previous posters.
Firstly, let me declare that I an Irish white guy in my upper 50s and since I came out I have enjoyed a preference for asian guys verging on about 80% of my sexual and social partners.
With such a strong predilection I have given this topic a lot of thought.
I first discovered the tendency when I was on a visit to Singapore. In fact, I was there honeymooning with my wife!
But that's long behind me now, so let's focus on my gay self.
Is my preference fetishistic?
No, I don't believe so at all. It is however, something very hard wired in my mind and I maintain that I'd find the only gay guy in town in a blackout.
It goes beyond the physical as well. I like asian personalities. I find them to less encumbered with much of the moral and class issues that complicate many a european/us relationship. Being Irish also, there's something of a pan internationalisation about us, so we're readily open to guys outside of our immediate racial pool.
Reciprocal?
The next thing to consider is that my preference is reciprocated. To be crude about it, for every 'rice queen' there's a 'spud queen'.
Also, go into any supermarket in London and you'll see a asian guy with a mature white partner, and no, he's not a sugar daddy and no the asian guy is not some gold digger.
I'm not bragging, by the way, but I have done my market research on this. Believe me. When I came out I was forty, living in London and with a lot of lost time to make up for. That is to say I got very busy and in the space of a few years I have had sex with guys from about 45 different nationalities.
I could be so sure about this because it was always one of my first chat up lines ... where are you from?!
Conclusion?
I have a theory and it almost certainly can't be proved, but here goes anyway.
I reckon that the rules of reproduction are anchored in homogeneity. Survival of the fittest and all that.
But what if all the caucasians are wiped out by a virus, or a plague crosses Asia while a meteorite takes out Africa?
That'll be curtains for those races, so this preference of mine, and I share it in almost identical terms with two other friends of mine, is a form of racial insurance.
Granted, we're not breeders, but if we were, there'd be a margin of us mating outside of our racial group and and given those potential disasters, there'd be the prospects of the race continuing in one form or another.
Also, let's not forget, this is not a gay or a male thing. It's working exactly the same way in the heterosexual world as well. It might not be as conspicuous because gay males have already had to break out of one societal cell, so they're likely to more independent in who they choose as their life partners.
I'd love to hear other points of view but the subject does fascinate me.
London Stephen
PS: Btw, would anyone be interested if I were to request an Asian corner here, for Asian men and their admirers?