Face it, there was a historical reason for the idea of the aristocracy. A group just didn't gain power and create the idea out of whole cloth to keep power forever.
Even before primitive man new anything about DNA and gene's, it instinctively knew that the children of smart people were usually smart too. They were also smart enough to know their very lives depended upon that small group of people with superior intelligence governing society.
In my opinion, where European Aristocracy went off the tracks, is when it started aggressively denying opportunity to those from the lower class that showed great potential the ability to move up social ladder to the extent their talents would take them, based solely on the fact of their “lowly” birth.
Everyone should be allowed to ascend as high as their God given talents can take them. To deny them that right is to deny society the benefit of their leadership.