You might be able to argue that one view better promotes happiness or is economically more efficient. Everyone is passionate about what he or she thinks is right and wrong. If one is not rewarded and the other punished, what does it mean to say that one is right and the other is wrong. Finally, all that is left is a personal preference, with no standard by which to choose between the various preferences that people have. Not a single human being.
Skinheads believe that they are right and the civil rights crowd are wrong.
And that, this being so, the country ought to make different decisions. Richard Rorty has nothing but scorn for someone who still believes homosexuality is sinful and wishes that such people be excluded from the decision making process for the republic. Fact is, we all violate our moral code all the time. We are always condemning others for what we do ourselves. We all have a higher view of ourselves than others do.