It's because people are idiots and think others can change. They can't. When they do it's a temporary facade. An addict of any type will always relapse, and especially if they are ones using religious cults like AA, or even religion period, as a crutch. This is one reason I hate preachings of unconditional love towards everything and everyone. It blinds people to truth.
Please come join my forum if you're not a trendy and agree with my points of view.