Oh my, I haven't been receiving emails when posts were added to this thread, I assumed it died, sorry everyone!
First off, thank you for the replies and advice. I'll address a few of the comments/questions that came up:
With regard to not being properly nurtured as a child, I'm not sure how to address that. My father was an alcoholic and was extremely negligent and emotionally abusive (but never physically abusive) and he died when I was 9. The only impact my father had on me was my teetotalism. My mother used to hug/kiss me goodbye when I left for school every morning, but one day I realized "I hate this and it isn't necessary" so I just stopped doing it. In fact, I find the expression of affection and emotion to be profoundly disturbing; I haven't told my mother I love her in almost 10 years. So, I suppose my mother tried to nurture me in this way, but I didn't want this sort of affection, I disliked it quite a lot (there was nothing inappropriate about what she was doing, I just don't like being touched, period).
In response to the question of whether or not I think my attitude would change if I were to meet someone, my answer is a definitive "no". There was a girl with whom I experienced a mutual romantic attraction, but I had absolutely no desire to be physical with her. In all honesty, the thought of physical intimacy with another person isn't something that ever crosses my mind.
I also have a very important piece of information to add, I have no idea why I left this out before, since I'm sure it's a huge part of this issue (not the cause, but definitely a major symptom). I HATE being touched -- it doesn't matter what kind of touch it is. Whether it's an honest accident like brushing shoulders with someone in a hallway, or a friend putting his hand on my shoulder or patting me on the back to congratulate me -- the emotion I experience in these situations is invariably rage. I don't blow up, even though I'm absolutely livid, since I'm able to acknowledge that there's nothing wrong with what they're doing and that my reaction is irrational and abnormal, but the anger I feel is quite intense in these situations. Also, I am absolutely disgusted at the thought/sight of physical intimacy; I find it sickening and infuriating. I understand that this is NOT normal and that without sex I wouldn't even be here

but, for whatever reason, this is how I feel about it. When I'm watching TV and the characters start kissing or touching or when imminent coitus is strongly implied, I immediately change the channel or turn off the TV (or cover my eyes if that's not an option).
I'm just very confused about my attitude toward sex and physical intimacy since there doesn't seem to be any reason for it. I've never never had a negative experience of any sort (abuse, rejection, failure, etc.) and I was never taught any of this by anyone. This topic was never discussed in my family (immediate or extended), positively or negatively. I was not sheltered, I knew all about "the birds and the bees" before I was even done elementary school. I don't suffer from depression or Asperger's or any other sort of mental/social disability... I'm a 20-something male! Am I not supposed to have a preoccupation with "getting laid"? (This isn't my goal, but the way I am seems to be the polar opposite of what is considered typical)