[nitrogen]

The existence of personal values is a fact that has biological and cultural origins that can be studied.

Also, you are conflating one person's opinion with science.

On the subject of cultural differences in morality, these can be surveyed empirically and considered within a framework of natural selection (both biological and cultural). One can choose to derive any moral framework they wish, but scientifically speaking, the moral frameworks that survive are those that can yield the greatest memetic survival advantage of the framework itself.

And in the end, it's all just physics anyway.