I made the case for evolutionary advantage... for some reason you brought up the bible and bronze age.. Incest will be wrong forever and I laid out exactly why in the previous post. We are fully aware what atheist prof was stating.. he is incorrect based on what we know about how societal ideas are formed.
Well I disagree. I don't think there is ANYTHING that will be forever wrong and immoral. For example, even murder might no be immoral in the future.
Imagine if future technology makes it possible for people to back up their mind into computers so that the destruction of your mind doesn't cause permanent death (also known as brain uploading). Sure its a controversial area and many argue its impossible. But just play along. If we discover brain uploading is possible and if we can prove that you stay the same person throughout and that the mind backed up in the computer isn't just a copy, then the concept of murder wouldn't be as immoral as we consider it today. In fact it might become as petty as someone stealing a bike or snatching a purse. Sure it'll be bad and a nuisance but we wouldn't call it immoral.