Ooops, I started to respond to the wrong thread...
This is a good point, btw. When one has one's mind made up already, it seems to me to be somewhat counterproductive going to a discussion forum. I respect that some people are warning others, attempting to act in the best interest of others, but when it degenerates into disrespect, I disengage from the point of the writer. Telling someone else that he or she is a "moron" makes the speaker sound less credible, I feel. As if ad hominum attacks are all that they are capable of.
Oh well. I look forward to healthy debate and expanding understanding.