There are some snide, bitter people on AIBU who use it as an opportunity to show off perceived superiority and give an OP a sustained verbal kicking.
I've noticed that it goes a bit like this. If your original post is emotional, perhaps poorly spelt, long, with poor paragraphisation, then you'll get a slew of posters rushing in with one-line, dismissive comments, like some sort of filter.
I saw one (I presume woman) on here post about a horrible domestic violence situation, and the number of cruel posters who claimed she was inventing it all, or even PROVOKING it, was extroardinary.
The weirdest part is, you get people in clearly emotional states and distressed, and yet those people are dismissed from AIBU for not cheerily saying "cunt" in their posts, or writing in office English etc.
And yet if someone posts "AIBU to ask which Glasgow divorce solicitor you'd recommend", or "AIBU to ask whether you dug into your basement for an extension?", both of which are not dilemnas and could easily go elsewhere on the boards...nope, people love those, no problems at all, OPs are treated politely.
This board is full of snobbism and cliques. YANBU.