It's been accurately and fairly pointed out that everyone has individual preferences - relative to physical attributes, personality, values, etc. And that's ok. It's part of what makes people and life interesting. But, people don't always express those preferences, like not being "out." I think the reason for that has mostly to do with two things:
1. What city (not necessarily state) you live in...i.e. your environment
I live in the midwest, not the traditional south - although, Indiana could fairly be described as a misplaced southern state. I live in a small city where anything or anybody that doesn't look like a Norman Rockwell painting often draws stares and comments. However, in Indianapolis or Chicago, where the population is far more diverse and people far more tolerant, inter-racial relationships seem less of a big deal. I've traveled across a lot of the U.S. and the live-and-let-live attitude seems more common in cities like Boston, D.C., Atlanta, Dallas, Houston, Phoenix, Chicago, Detroit, .... By contrast, an hour outside any of those cities (except maybe Boston) and you're in a whole different world.
2. Are you the type of person who cares about conforming or being individualistic
Some people are just naturally wired to be more individualistic or maybe develop the behavior in childhood (I'm not sure which). I think level of self-confidence is an important determiner of that quality. IMO, manypeople, if not most, are not overly self-confident.
So, if you live in a non-diverse, intolerant, and/or less urban area and you aren't the most self-confident person, you may not express your appreciation of a particular race, size, or personality type. OTOH, if you live in a more tolerant area you might.
The original poster said he lives in SC. I'm guessing that means something less than a metropolis, where intolerance is a time honored tradition. The people who are openly interested in him will be much harder to find. If he has the means, opportunity, and will, he will likely have better luck in a larger city - of any latitude.
Finally, don't let anyone tell you that your "preferences" are inappropriate or wrong. Having a preference doesn't mean you have to be rude, disrespectful, or intolerant to anyone. My favorite color is green. Is there anything wrong with red? Nope. I just happen to like green. My favorite gender (sexually speaking) is male. Is there anything wrong with women? Nope. I just happen to like men.