Personally I think it needs to go. So many people post serious issues in there without realising the type of poster it attracts. It attracts trolls and some pretty vile posters who rip people to shreds because it has been deemed an acceptable behaviour on that part of the discussion boards. I imagine MNHQ spend far more time than is desirable responding to reports on posts in AIBU.
If it remains OP's need to be be more heavily moderated not just to avoid trolling but to protect vulnerable posters. There is an active thread where someone in the midst of a mental health crisis is being torn to pieces, it's disgusting