https://en.wikipedia.org/wiki/First_Dynasty_of_Egypt
>Human sacrifice was practiced as part of the funerary rituals associated with all of the pharaohs of the first dynasty.
>It is clearly demonstrated as existing during this dynasty by retainers being buried near each pharaoh's tomb as well as animals sacrificed for the burial.
>The tomb of Djer is associated with the burials of 338 individuals.
>The people and animals sacrificed, such as donkeys, were expected to assist the pharaoh in the afterlife.
>For unknown reasons, this practice ended with the conclusion of the dynasty.
If the Egyptians knew that it was fucked up to scarifice people 5000 years ago why did it take the Aztecs so long?