If you don't like people knowing too much about you, consider reading up on schizoid personality disorder. I'm not saying that you have it, but that particular foible is certainly reminiscent of it.
Thank you, it was an interesting read. Despite my enjoyment for introspection, I'm hesitant to do self-diagnosis based on a Wikipedia and a few articles around the Internet. But, as far as I can tell, this is just me being an introvert guy who spent most of his life in front of a computer instead of socializing. I'm, however, aware of my issues and slowly becoming a better person, or rather a person I'd like to be. In this particular case, I don't think that knowing the name of my supposed diagnosis would help me in any way.