We don't tolerate personal attacks because the history of this site shows us that behavior leads to a very toxic environment for the entire site. Good posters leave when the site becomes toxic. We haven't been a very strict site, but saying "don't call each other names" should be easy enough to follow. It shows that you value the other posters as an equal no matter what you are currently disagreeing about. If you believe that this rule is garbage, you need to post somewhere else.