My solution is to leave the choice to humans with no intervention and let their fate come at their own hands. If they can not or will not see what has been given them, then how are they ever to be trusted with a greater gift. If those who tend the vineyard let it succumb and die, should they be given a greater vineyard?
What exactly do you mean when you say, "My solution is to leave the choice to humans..."
You sound as if you are not human your self.