Many would agree with you in that the US was founded by irrational people's belief in that primitive book of savages.  Manifest destiny is barbaric and self-serving savagery.  What good could ever come from such a compiled discourse of primitive dribble?  Of course, we best quantify humanity by pro-forma of economics and  scientific analysis, and remain consistent in judging moral life from a social utility perspective.  Yes, the real tragedy as that logic extends is the 1820 arrival into Hawaii of savages wielding that primitive book used to penalize local culture and take the kingdom away from the natives.  Yes.  Just abort all future "fetuses" and return the islands to the natives.