Originally Posted by Ring Lardner
It's not that so many folks is ignorant; it's just that so many folks know things that ain't so!
You may have noticed this phenomenon in the replies to this thread.
A lot of us go through life with certain fixed ideas (Large Economy Size is always cheaper, Southwest has the best price, hotel points -> airline miles is always a losing proposition, etc.). We have to step back and actually evaluate each individual case before we make knee-jerk decisions, based on what "everybody knows".
That's the beauty of Flyertalk.