I just read through all of the replies and saw terms used such as "ignorance, stupidity, ego, and insecurity." Yet, those using these terms seem to be implying that they onlyapply to the other party in an argument, unless some people on here are admitting they are stupid. Remember, an argument is like a dance and it takes two to tango (although some on here end up like a conga line).
With that said I'll admit I'm not afraid to cut a rug now and then.