Honestly, there is nothing wrong with your son! There are many people out there in the world who prefer to eat healthy foods, and do not touch any sorts of junk food or anything. There are also people out there who are on a "raw organic diet". Just depends on the person. From past research, I have found that people who ingest healthy foods full of vitamins and minerals, are a lot more happier, less stressed, can concentrate better, and are more active. It's a great thing that he is taking great care of himself! Perhaps you should try involving yourself in activities that interest him? Instead of upsetting yourself because he doesn't want to sit and watch the television. You should, and NEED to be proud of your son! He seems like a great kid who is striving to maintain his health, and improve his knowledge.