Because some people are ***holes with no life. **** them, they're just pathetic wastes of flesh. Part of the reason I am terrified of socializing is running into a jack*** , it's happened too many times. I sometimes I wish I could punch jerks but that wouldn't help the situation at all. So I shoot a dirty look and walk away.
Some people like to start fights to sate their big egos, my "friend" does this all the time on the internet.