I'm sorry to hear you're giving up so soon.
You've only been here since April, and frankly that isn't very long for the average member here at PC to get to know you very well.
Perhaps you've read into some posts about what others here think about you? Perhaps they are just trying to help you in their own words and way? Few ppl here are expert counselors, so what they say and how they say it might not be exactly what you would get from a direct communication with your T, but I daresay they mean well.
I'm sorry you feel inferior for being a teen. While I have personally expressed concern over the teen population here, it hasn't been in any way thinking or saying that teens can't function here and grow and learn. I'm concerned that you don't have friends IRL and haven't made any good friends while here. Perhaps if you stay, you will learn more about the making of friends on a website like this one. It is quite different from places like "myspace" and other sites, don't you agree?
Please stay. You're worth the effort, imo.
(It's ok to change your mind, others have

)