Trust me, I know the feeling. I have conversations with friends, after they flew, and asked what program they credit to. "Oh, I only fly 4 times a year, so I don't bother". Heck, even at that level, they'd have a international ticket in a few years. But, I won't waste my time trying to convert them.

Last night an uncle of mine wanted to get in on some of the Intl mistake fares. The first question I asked is if he had a valid passport. No. Well, I said, you'll need to get one. That seemed to kill the urge to travel, however. Strange!