For me, there is no such thing as right and wrong when it comes to morality; there is simply accepted and unaccepted.
Each individual will determine for themselves what they will or won't accept, and will base their actions accordingly. Society, religion, culture, upbringing, environment, laws, individual traits and even current state of mind will all influence what an individual will perceive as acceptable.
As such morality is both subjective and relative.
Do you really think it's okay for each person to determine for themselves what is moral and what is not?
Personally, I think there needs to be some social consensus on what is acceptable and what is not, otherwise we will have chaos and clutter in society.
And I agree that human morality is relative and changeable but God's morality is absolute and unchangeable, and therefore more reliable.