Let me just say that Dr. Bob was my first xbox live friend, and I met him on the GFAQs CoD4 board, back when I was still playing CoD4 and MW2 hadn't been released yet.
I won't forget you, even if you delete all traces of yourself.
It's clear you've got some stuff you need to work out. I don't know what it is, and I won't pretend I understand. But cutting off communication isn't the way to do it. People need to talk out their problems; they want someone to listen. I hope you have someone in your (real) life that you can talk to, and get all this shit off your chest.
I've had some dark times in my life. I won't claim to have any sort of mental problems or anything, though I often felt at times that I did. I've contemplated suicide, and I've had imaginary scenarios play out in my head a thousand times where I shoot/hang/drown myself, even if I didn't want to be thinking that way.
I don't know, if you want to take some time off and figure shit out, then go ahead. Life is a series of high points and low points. You're the only person who can improve your life, though. That's only if you really want to.
/badadvice