People from all walks of life join MLMs, often without sufficient due diligence. Even if they did, they often convinced themselves ( Semmelweiss Reflex ) to suppress their own feelings of revulsion and doubt to keep going, even if it involved stepping on the back of other people to success, as well as lie, tell half-truth, and other things that are soul-crushing.Listen to this former Mary Kay sales director (one rank away from the highest: national sales director, top 2% of all participants) when she walked away... Because she realized her success came at expense of other participants.You can read the rest at pinktruth.com , or watch the full 20/20 episode here . Skip to half way point to get to the story directly.The sad truth is some people NEVER wake up from this self-denial , because they crave outside approval so much, they were willing to forgo their ethics for outside approval.Let this be a warning to all... "success" may come from stepping on other people's backs, even if they were smiling when you do it.