I see in your signature that you are suspected to have Aspergers. Many people with Aspergers feel like this all of the time. There is a really good book called "An Anthropologist On Mars" by Oliver Sacks that describes a woman who is a professor and has autism, which is the more severe form of Aspergers. I really think that you should look into an Aspergers support group if you feel like this. You are certainly not alone.

Please know that you are not the only person who feels like an outcast or like they do not belong. I feel like that a lot of the time and have felt like that since I was a child. Keep your chin up!