That's normalising clean-ness (i.e. the state of being free of all psychoactive chemicals) perhaps too much.
The original humans adapted to a wide range of diets across the world (one reason why we're such a successful species), but most groups seem to consume mild psychoactives a lot (it's hard not to, so many wild plants have some level of activity) and seek out more powerful ones occasionally and for specific situations.
The original humans adapted to a wide range of diets across the world (one reason why we're such a successful species), but most groups seem to consume mild psychoactives a lot (it's hard not to, so many wild plants have some level of activity) and seek out more powerful ones occasionally and for specific situations.