As someone said, it is all about competition. Besides, people are not original, they follow the crowd. Anyone who refuses to be part of the crowd is considered abnormal.
There is no such thing as morality. It is just a stick with which to beat the poor and the weak. Even ideas like 'do not steal' or 'do not kill' can be interpreted differently - they simply help society stay afloat. It is all a matter of convenience.
According to natural selection, organisms adapt to environment to survive and replicate. Doesn't this ability and will - to adapt - point to intelligence?
We accept certain things as universal, that's the point. Discrimination is wrong, and this ought to be a universal concept. Murder is condemned, it is universal. We don't make laws saying murder is okay in certain places. Nor do we talk of rights of bigots to commit murder. The freedom not to be...