Preferences can and do change. Believe it or not before I came to Korea, I was not the least bit attracted to Asian women. I had friends who would talk about that I was going to be around so many beautiful Asian women and I couldn't fathom what they were talking about. I found Asians to be incredibly unattractive. Then once arriving in Korea, my preferences changed drastically within 6 months or so. It was such a drastic change in fact, that I now think Asian women are maybe the most attractive women. Strange how that works.