I have got to say this is 1 of my personal favorites. I had this saved on my pc from like 3 years ago and I still read it from time to time. I wouldn't go as far as depressing but it is intetesting to say the least. I think it's the poetic justice that gives it that flare of greatness.
This is... dark. I've got to agree that "depressing as fuck" doesn't quite describe it; "utterly disturbing" would be a better description. Anybody can write sad stories, but not everyone can write one that shakes you to the core.