Keep in mind also that "want" drives the market more than "need". I bet we can all think of something we paid extra for simply because of "want" when a lesser priced "need" would serve the same purpose. (Vehicle, clothing, home, etc., etc., etc)
you are right..."want" drives the market more than "need"...but needing can be a necessity...wanting can be a fad...
I do know this about me...when I like my dogs I tend to treat them a little better and I enjoy them even more in the woods...I want nice conformation and certain colors best but I have to go with performance first...and I don't like much white on a dog and I like short slick coats and a decent ear...
If I were into the catahoulas I would want about the same thing...but dark blue merle with dark tan trim is nice...with one brown eye and the other eye 1/2 brown 1/2 blue, and brown ears...I had one like that as a kid and he was a pretty good dog...of course "Blue" had to be his name...