> right and rational

Even you seem to agree that there is a notion of a "right" thing.

A "Rational" action can totally depend on what you want to achieve. And also considering the fact that "rationality" is not equally distributed among the people, it follows that there need to be some kind of gospel that needs to be followed so that everyone will do things that are collectively beneficial...

>It's not the job of science..

Isn't the ultimate goal of science the betterment of human condition? If you agree that, I think it is indeed the job of science to suggest a proper replacement for the stuff it is overthrowing...