Why it was a theory in the first place? Everyone who felt depressed knows it is caused by life conditions. Of course, chemicals can help. Chemicals can make yo

Why it was a theory in the first place? Everyone who felt depressed knows it is caused by life conditions. Of course, chemicals can help. Chemicals can make you very happy. Under a dose. But implying that happiness is just a state of chemicals in the brain is a path to existential void.