ED type discussions, especially on the internet, do have a tendency to getting really nasty really easily. People usually have strong opinions one way or the other, and tend to be personally invested in the topic they feel very strongly about. Some topics become attached to their personality. Due to that, some people get really offended against opposing opinions, as it can challenge their world views, such as their views on morality, or can view an opposing opinion as a personal attack. This tends to have people blurt out crude and snide comments, thus jabbing the knife further into a person's side. Just a simple explaination. You can see this happen in the CE subforum in certain threads. Also everyone's been guilty of this at some point in their life.