Welcome, and thank you for feeling trusting enough to share with us.
It sounds like the SSI interviewer did more damage than good. Unfortunately they seem to choose the bottom of the pile to fill those positions and all they are capable of doing is read a form and fill in the bubbles. If only they could experience a week in our shoes, perhaps then they would open a dictionary and learn what the word empathy means.
I've only been here for a short while, but have been able to find support I have not found elsewhere. I tend to be a loner (plan to change that this year) but I've made friends in the three weeks since I became active.
I recommend that you read through various forums, not just the one you think you belong. A lot of this mental health garbage crosses boundaries. Also, I recommend you check out the chat rooms. You don't have to participate, just observe. You'll be surprise what you can learn.
I hope you find some solace with us. Good luck!