FATHIMA- of course right and wrong didnt happen overnight. Our moral stds comes from us iving together in a society where cohesion and coperation means survival and to progress - togther. The story shows that the golden rule lives within us all in spite of religion.

I do not  live a life based on faith. I have good reason and justification in what I believe in and use this to help me undetrstand my world around me, what is occurring, why and how they affect me.  This helps me get through life by ensuring I make more  good descions than bad as they are based on reality, reason and truth. This cannot be said for the religious. 

You say " And Islam is all about being a good moralistic human being who promotes all things right and just and condemns evil and injustice"

I challenge this - tell me about your religion. What is the punishment for apostasy????????????