In The Kite Runner, how do Amir and Hassan represent the divisions in Afghan society, and how do these divisions affect the courses their lives take?

Amir and Hassan characterize the difference between the
haves and the have-nots in society. Amir has everything-house, education, books, and
possessions. What he does not truly have is his father's attention and faith in
religion. Hassan is the have-not in the Afghan society. His family has no social status.
He lives in a mud hut and works as a servant along with his father in Amir's household.
What Hassan has, a caring father (actually two of them) and faith in religion and his
friend, gives him what Amir cannot have. Amir questions life, himself, his father, and
even his loyal friend. His existence is constant turmoil and unhappiness. Hassan, on the
other hand, faces life head on and deals with it. He has the faith to show him the way.
Only when Amir comes to America and has nothing but hard work and the attention of his
father and wife, does he find purpose in raising Hassan's abused child. Abused by the
social class that Amir once belonged to.