I converted a few of my friends years ago, but have long since given up trying. I have a few friends who accrue miles or points on credit card spend, but they will book willy nilly and are convinced that they got a great deal. I have many more that are envious of my "free" travel but won't listen to any suggestions about how they, too, could do it. It took years, but I finally realized that some things are better left alone.