Why are so many people rude and obnoxious when answering questions?

Why do people insist on trying to make themselves sound smarter than they really are by using words in their answers not typically used in day to day conversations. Also why do they criticize the individual asking the question by pointing out spelling errors or undermining there curiosity. If you are not one of these people I commend you for being considerate of others feelings and hope that you have a pleasant day! If you are one of these kinds of people maybe you should keep your opinions to yourself or try to be more polite and kind to your fellow human beings. Who ever or whatever made you into this kind of person must of been awful, but it wasn't me so save that attitude for the right time and people and not just anybody with a silly question, I am sure I speak for a lot of people out there who are tired of your ridiculous behavior on yahoo answers!!! Peace ( YOU NEED SOME)