I imagine medical science will eventually reach a stage where IF you're not happy being white or black, or male or female, or hetro or homo, etc, you just put your money down and they genetically change you in some way. I can't see why people can't be happy as they are made.
I had a female friend, in school, who was African American (her referral preference) but she had very few of the African American traits ... she was short & petite, but her black hair was fairly straight, her lips thin, her skin light, and no traceable accent whatsoever. I thought she was very beautiful, actually, but she wasn't happy with her skin color, etc. In fact, she got upset when someone asked her if she was "black". She said her parents were so different from her, in that they had many of the Afro-American traits mentioned. I though this but didn't say it "maybe you have a different ******* or you were adopted" but she was very sharp, I'm sure she had probably already given those thoughts consideration.
Right now, however, we don't really have that much choice as to who we are. I'd personally LOVE to have an additional 3-4 inches between my legs, but then, maybe I would also inherit the ED problems that so often come with them. So, I guess I'll just trudge on through life with what I have and hope no woman see's me nude when I've come out of a swimming pool ... LOL