lilypeppermint, I, too, am sorry you've had these experiences here. Believe me, they are the exception. The moderators do a good job of responding to complaints/concerns about posts, so please report such problems.
Of course, you are free to delete your account, but I hope you will give PC another chance. The powers-that-be haven't had a chance to check into your concerns.
I think people need to be careful about questioning diagnoses. I don't know why someone would be caught up in insisting that you get professionally diagnosed with PTSD, but I assume that was just one person, and one person doesn't speak for the many people here. Just as one person doesn't speak for the suicide issue. Okay?