I don't normally post messages but this question is troubling me. I am introverted myself and can quite understand why people might not like going to social events. But human beings are essentially social creatures - we support each other and help each other out - that's how things work. I can understand that at your stage of life, OP, you may feel you don't need this, but nurturing relationships is, if you like, a form of insurance for when we do need help - for example are ill or something.
You say that you don't have any sort of condition, but how do you know? Have you seen a psychiatrist? And did they do a full enough evaluation? It is not uncommon for things to be missed on a first assessment, and to be honest, virtually everything you've said and the way you've said it really doesn't sound entirely 'normal' to me.
If you do have a condition, then, I know from experience, a diagnosis will help you and your family to understand the situation better and consider how best to handle things.
Please don't take this the wrong way. I'm trying to help and just feel that if I didn't say something when I could, then perhaps I might have failed to respond to what appears, in some form, to be your cry for help.