I was wondering why?

considering all the half truths, exaggerations, inaccuracies, misaligned facts, rumors, personal judgements, opinions, complete falsehoods, and just plain dumb crap on the internet why is it that so many people on Y! answers seem to feel the need to comment on how you answer something and do nothing more than say i disagree or well that was a dumb answer. i don't care how you answer this cause it really doesn't matter enjoy your points and go.