It sounds like you often try to listen to people with a sympathetic ear but nobody seems to have done it for you. By you messaging on here are you reaching out for somebody to help you for a change rather then the other way around?
You say your friends bore you. Is the reason they bore you because you see yourself as being a very thoughtful and intelligent person that always has a lot on and in their mind, whilst your friends seem to live in an intellectual din where they seem to have no opinions or thoughts themselves? I get down sometimes because I feel this way about the whole of humanity, not just some of my friends...
Do they bore you because they have nothing in common with you anymore? We all change and people growing apart (or together) is sadly normal. We can't hold it against them for doing so. Friends are transient, and old ones will go and new ones will come all the time as you all change and grow (and what you enjoy changes). Maybe you need to take yourself out of your comfort zone and start looking for some new friends. Find something you have in common and talk.
This attitude is very destructive, and you don't want it to continue. My marriage is experiencing problems at the moment and one of the reasons is probably due to my "I hate everyone" opinion of the world (my wife is one of those people that can't see any wrong in anyone, even the people who seem boring and stupid to me). I'm aiming to help my situation by getting out of my comfort zone and into hers- it's going to be difficult for me because I'm a loner and would rather read a book on my own then socialise, but with luck I may meet new people, ones that ARE interesting and intelligent and it will be worth while.
I'm not sure if any of this will help with what you are thinking. But if you want to talk and get anything off your chest or just want someone to throw ideas or thoughts off I'd be willing to listen (you can have my email address if you don't want to talk publicly).
Keep your chin up,
Brad :- D