Morality is determined by the opinions of the group. Might makes right. The strong do not protect the weak, they devour them. It is the development of our civilization and standards of living and not any particular religious beliefs that have changed this. I would agree with the first part of that statement.
Life is merely a consequence of the physical laws which determine the nature of the universe.
They matter only in the context of our arbitrary legal and governmental systems. Nothing matters, except the fleeting pleasures of the passing moment. On the other hand, if God exists, life has meaning and purpose. If God exists, life is predetermined and can't really be said to have any purpose other than to play out the string. Every single individual is equally important in the eyes of God, and endowed with inalienable rights.