When someone comes to believe that they are not giving up something of eternal significance if they leave the Church, it is perfectly understandable that they would choose to opt out. If that really is their perspective, and if it leads them to choose to leave, we should give them a sincere hug, tell them honestly that we will pray for them on their own journey - and then treat them in the exact same way we would if they remained among us.They know how we view their choice - the disappointment we feel. We don't need to throw it in their faces. Rather, we need to do what Jesus commanded and love them just as if they still were meeting with us. Leaving the Church shouldn't change a thing about our relationship - except the association we lose on Sunday and other non-church related activities.