I've seen quite a few threads recently where people have asked a "AIBU" question and have become very defensive and upset when other posters suggest that they are BU.
It's very rare that I see a thread where every single response says that - most of the time there is a mix of responses and opinions. This section of MN can be pretty harsh at times, but the majority of the posters seem to have consideration for the OP and don't say anything that is overly harsh.
I think it's a good thing to be honest and sometimes you do need to be blunt in order to get your point across. Having said that I don't think there's ever any excuse for any kind of rudeness or goading.
But sometimes I do wonder why people post questions here if they aren't prepared to receive other perspectives instead of just "no YANBU you are totally in the right" all the time? It's nice to have affirmation sometimes but this is about honesty and dealing with situations in appropriate ways. No one's perfect and we all make mistakes in our conduct but part of it is owning up to being wrong sometimes.
Sorry for rambling - just early morning thoughts.