Why do people take Y!A so dang serious?

I started getting hared by a sarcastic b*tch because of something so trivial and minor. I gave her best answer because her answer was closest to the best, and she started to email me saying I'm a liar. Well dang I'm so sorry, geez. Why do people get so emo on Y!A? Is it the only thing they have in their life? Or is it the fact that they have no life?