I like writing too and i've declined the offer of my doctor's email several times now just because i know myself and i know how unrealistic i get and how i tend to write rage emails and i want to protect both of us from that. I think you probably got all the mileage out of your letter to your therapist just by writing it. If you're like me, at the moment of seeing people, it becomes clear it's just not appropriate to say all that rage stuff. When you actually see the person, the appropriate words will come, not to worry.

I'm sorry you were disappointed by your recent attempts to socialize. I don't expect much from people socially. I'm mostly reclusive and enjoy my dog. There was a time when mental health professionals encouraged me to socialize but now that i'm 51 i don't hear that anymore. The message that socializing is healthy is a mass message and as individuals we get to decide if it applies to us or not. I don't feel out of touch with reality from all the isolation. I enjoy the solitude, peace and privacy!