Well, if you must know.....
I don't want to hear my friend's death somehow turned into a story about your terrible childhood and how you're a total victim always.
I don't want to hear the words "Everybody is sad" come out of your mouth, after having let you cry on my shoulder over totally petty shit again and again.
I don't want to hear you to turn my problems into a pissing competition over who has the shittiest existence. I'm totally willing to bet that your existence is the shittiest, but it's not currently relevant to what's going on in my life.
Most of all, I don't confide in you because I only see you at work, where I don't want to talk about my problems or break down and cry because I'm trying to fucking WORK and not think about this shit for a few hours of the day. Quit lurking around trying to get on the drama train, because it is not stopping here.