Hey Graeme. I'm very new to this site (as of about 5 minutes) and I really hope you're still there to read this. I can't say that I understand what you're going through. Everyone's situation is different and I know that I always get upset when people tell me "they understand". I'm not going to tell you not to do it; that's your choice, and I know you don't take it lightly. I do however want to know what caused/ is causing you to feel this way. Maybe we could talk about it? I could always use someone to talk to as well. Just let me know.
Take it easy man, I really hope to hear from you.