Bring quotes into it, will ya? ;)
"The world is my country, and to do good my religion."
"I believe that religious duties consist in doing justice, loving mercy, and endeavoring to make our fellow-creatures happy." - Thomas Paine
"Why continue? Because we must. Because we have the call. Because it is nobler to fight for rationality without winning than to give up in the face of continued defeats. Because whatever true progress humanity makes is through the rationality of the occasional individual and because any one individual we may win for the cause may do more for humanity than a hundred thousand who hug their superstitions to their breast." Isaac Asimov
I agree with Thomas Paine that duties include doing justice and loving mercy. But why? Why should are duties include that? And what makes us believe that? Is it designed into us or a mere societal norm?
Must we continue? What call? What is noble? Says who? What is progress if this universe is all there is? For even our secular scientists say this universe will end. Why do we care about the cause of humanity? Why should we care at all? Was it designed into us?