Ah, my favourite type of thread.
OP: Aibu?
Everyone: Yes.
OP: No I'm not!
Just... Why? It adds nothing. It proves nothing. Everyone says it as though they are the first person to think of it, even when five others have already said it on the same thread.
Increasingly, it's not even ones where the OP is being unreasonable. It's threads where the OP is getting a total, unjustified kicking, and some tit decides to post the above to undermine any further attempts to defend themselves. FFS, if you can't be nice, at least be original 