because the screen sucks all emotion from you and your soul is fighting the screen to get the emotions back, so you are currently in berserk mode whenever you are on the internet
Because if they said the things they do here in real life everyone would hate them xD People online can be real jerks but my tactic is: Reply with a witty comment If I can't think of one use humour If I can't think of a joke, say nothing at all xD