Don,
I didn't think that your original post was done in a "put down" style. You are right, those of us who demonstrate regularly for the public hear the same old stuff, over and over, and it does get old. The tendency for some smiths (certainly not you or me) is to fire back with a comment that can be perceived by some as being impolite. Some other all-too-regularly heard comments are: "Boy, my Grand Daddy had one of those blower things, and I had to turn it for him. It sure was hard!", or "This blacksmithing stuff is a dying art", and of course, everybody's favorite - The well-worn joke about "not taking all day to look at a hot horse shoe". When we hear this stuff over and over, it is sometimes hard not to come back with a zinger (you're hot, tired, thirsty, got a million other things to do, etc). Just remember, you may be responding to your next customer, or your next customer may be within ear shot, besides, it's good manners.
Thanks for starting this thread, and I just realized that I kind of hi-jacked it from the original intent, that is, blacksmiths in the family heritage.