That's also true. How can you not be defensive when someone's reply starts with, "listen here you stupid dumbfuck....." Of course that kind of name calling is going to result in a verbal fight. I don't know why we can't just say, "OK I disagree but here's why, and I hope you'll appreciate my feedback." Do we have to resort to calling each other juvenile names? A person isn't stupid just because they have a controversial point of view.