>>611920
Because they can't.
I would have disagreed with your assumption that the basis of morality is that human life has inherent value, I'd have to argue that the basis of morality is the 'Golden Rule' -treat others the way you wish to be treated. The basis for the Golden Rule is an assumption that we are all living, breathing, and most importantly, conscious/thinking beings and that it is our consciousness that grants us sovereignty over our bodies. Once in possession of a body, it becomes ours just as a king claims ownership of land in his kingdom's possession.
The reason we own it is because while yes, others can kill you and force you to do things you don't like, they cannot force you to think a certain way. They can try and influence your thoughts, but the mind is yours alone. Your body is controlled by your mind and no one else. You can be bound and gagged, but still they cannot control you. Although with modern science it may be that someday your body can be controlled by another mind… a horrifying thought. Even then though, your mind is a part of that body and it remains your property. Because your body is your property you own the fruits of your labor, etc. I could go on but it culminates in Natural Law and social contract theory, et cetera et cetera, you know the drill.
>>612002
>Morals are not absolute and change as a culture deems fit
Which definition of moral are we using, the latin of moralis or our modern day meaning of morality denoting right and wrong which is objective?
I know you weren't though you were trying to be subjective about morality which misses the entire point of morality. If something is 'moral' it is good in all situations and scenarios. If something is immoral, it is bad in all situations and scenarios. Period. It doesn't matter that the dominant culture disagrees, the entire world could be saying rape is moral, that would not change that factually, because it violates natural law, it is immoral. Natural Law is the only law that everybody of every religion and every nation can agree on. The Golden Rule is named as such because it's the core philosophy that underlines all religions, even if they selectively applied it only to the in-group.
Just because communists took over Russia didn't make communism moral.