Could it be that the primitive humans that used these substances adapted better to their environment compared to their non-indulging peers, and we're more likely to be direct descendants of them?
Not saying you are wrong, or right, but rather that it would be naive to dismiss this idea based on some notion of genetics and evolution. At some point the choices we made as a species in the past comes directly into play with the natural evolution our genes and culture.
One of the more obvious ways in which drugs could have played a part in our evolution is, roughly stated, how the consumption of certain substances may have kept those individuals with more developed brains from going mad, or counteracted some of the disadvantages, allowing the trait to be passed on.
Could it be that the primitive humans that used these substances adapted better to their environment compared to their non-indulging peers, and we're more likely to be direct descendants of them?
Not saying you are wrong, or right, but rather that it would be naive to dismiss this idea based on some notion of genetics and evolution. At some point the choices we made as a species in the past comes directly into play with the natural evolution our genes and culture.