>Committed relationships found by judging other people's personality and looks are completely unnatural for human beings, and a result of conditioning by society.

Humans developed culture and language. It is in our genes, how our brains evolved. Whatever we are doing right now is our natural state. Society, likewise, consists of other humans, and whatever conditioning they exert is also part of human nature, specifically of humans in large groups. Whatever social conditioning you are thinking of was not brought upon us by aliens.