MicShazam

As a reply to the original question, I'd say we often critizise simply because we, as humans, want to express ourselves. If I just saw a bad movie, I want to tell someone about it. If there's no friend nearby, it might end up as a whiny Youtube comment. Then someone who likes the movie will read that comment and take it as a personal attack and the whole cycle of silly internet mud slinging commences.


Criticism isn't really inherently negative in my opinion. It's just that some people can't seem to play along and have fun with the conversation.