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At its core, the human brain is always trying to find ways to stimulate the release of oxytocins - dopamine, serotonin, etc. (and perhaps, adrenaline?)

This explains why the Human engages in the activities it chooses to do, whether that be related to artistic expression, intellectual enrichment, sexual intercourse, friendships, supporting a charity, or eating a delicious meal.

On a tangent, you could say it is one of the fundamental characteristics that distinguishes the Human from a Pure Machine. You cannot reward a Pure Machine for good behavior since it does not know what it means to ‘feel’ good. It only knows to do what it is programmed to do.

Mother Nature programmed the human brain to seek triggers that will release these chemicals so that the Human will be self-motivated to preserve and further itself as a species.

Why does the Human listen to music? Because it releases oxytocins. Why does it release oxytocins? Because there is something in the music that the human finds intellectually stimulating; it may have a catchy beat, it may be the rhymes, it may be imagery. It may not be directly related to self-preservation or furthering of the species by itself, but this is one example showing Mother Nature wants the Human to seek out things that are intellectual.

Natural selection strongly favors the ability to drive a car in men. If you can drive a car, it is one reason natural selection will favor you in passing on your genetic information.

Evidence: