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The children of interracial couples often time grow to be more physically attractive than the members of any one single racial couple. >>
I'd have to agree, since that describes my kids!
I once found a parody website for the "Bi-racial Superiority Party" claiming bi-racials were the superior race - the site was created by a bi-racial high school student in Canada. Parents of bi-racials, even if not bi-racial themselves, would be 'honorary bi-racials' and all sorts of stuff like that - very funny.
Having a racially-mixed marriage (Caucasian/Asian) in the suburbs in the South, I don't think we've had a single negative experience. I know lots of mixed couples, and it's hardly unique any more, at least in my area. It's like when Asian cars first arrived here - seeing one was new and different at the time, but who looks twice at a Corolla anymore? Of course, I think some people's attitudes depend on the mix as well - white/black may still catch more stares than white/Asian.