They are worse than the disinherited. They are not the has-beens, they are the never-weres. - Clifford D. Simak

You do not belong to any bona fide religion that prohibits killing?"
"I presume I could classify myself as a Christian," said Sutton. "I believe there is a Commandment about killing." The robot shook his head. "It doesn't count."
"It is clear and specific," Sutton argued. "It says, 'Thou shalt not kill.'"
"It is all of that," the robot told him. "But it has been discredited. You humans discredited it yourselves. You never obeyed it. You either obey a law or you forfeit it. You can't forget it with one breath and invoke it with the next.

For even if the life of my own Earth and this other Earth on which I stood had started out identically (and they might well have started out identically) there still would be, along the way, millions of little deviations, no one of which, perhaps, by itself, would be significant, but the cumulative effects of all these deviations eventually would result in a life and culture that would bear no resemblance to any other Earth.

And how much did he and the others lost when they had turned their backs on magic? Belief, of course, and there might be some value in belief, although there was, as well, delusion and did a man want to pay for the value of belief in the coinage of delusion?