Genuine question.
I read so many threads where someone posts because they're upset, worried, confused or just looking for another perspective, and within a handful of replies someone has managed to tell them they're selfish, pathetic, controlling, attention-seeking, a terrible parent/partner or generally defective in some way.
Obviously if you post on a public forum you can't expect everyone to agree with you, and sometimes people genuinely do need to hear that they're being unreasonable. That's the whole point of AIBU.
But there's a difference between being honest and just being unkind and completely unpleasant.
Sometimes the OP hasn't even said anything particularly controversial and people seem to actively search for the least charitable interpretation possible. Then others pile on and before you know it the poor OP is defending something they didn't actually say in the first place.
I've genuinely read threads and thought why on earth would anyone come back and ask for advice after seeing how some posters get spoken to?
Surely it's possible to tell someone they're being unreasonable without making them feel like an absolute piece of shit?
YABU - some posters need taking down a peg or two and I'll continue being harsh to the point of being unpleasant
YANBU - I'd never post in AIBU because of the unpleasant replies