Why do my parents see a need for me to interact socially and have fun?? How can I convince them it is a waste?

Let them read this post. You make me laugh. I've told you this before. You will do just fine in life. You are just a little eccentric but very smart. If you are happy then that is fine. Explain to them that you appreciate their concern but you have bigger fish to fry. It might not hurt to have a friend or two though. To philosophise with.