I grew up in a town that was 98% white and went to a college that was maybe 92% white.
Once I was out on my own, living in big cities, I found myself intensely attracted to all manner of non-white guys, including Asian men.
For the past 9 years, I've lived on the west coast, where there is a greater number and greater diversity of Asian men than there is on the east coast. So, my tastes continued to broaden.
The gym I go to is heavily frequented by young, buff Asian guys, and I enjoy being one of the few white dudes around when I'm there. I like the contrast of their younger, smoother, more defined bodies with my own.
I've also seen all shapes and sizes of Asian dick in the locker room—and I've seen enough to say that stereotypes are definitely not always true.