There is a theory which in my experience seems to ring true more and more as I age. The theory is this:
The physical link to our 'mind' (the brain) or should I say the 'Mind' has been restricted by nature or some other external force in order to limit us to basic physical survival as its primary goal. The human being seems to have one extra function which is beyond other animals and that is an innate growing desire for something beyond itself which is brought about by increasing self awareness. This seems to be the only avenue that pushes the human beyond its primary survival instinct.
The bulk of humanity is trapped inside its own individual sense of self (ego) which drives survival. The non-individual sense of self or oneness can gradually dawn if the veil of ignorance is lifted by whatever means.
Let me be clear with regard to entheogens. I am not saying that the they are a tool for realizing absolute awareness, rather a gift to temporarily peek through the veil and help to clear away stored mental belief systems and start the awakening process and help to cement it. As mentioned in the chapter on Microdosing Psilocybin, mental traits, beliefs, stress and trauma can store themselves in the local physical and mental bodies and if left to their own devices can lock down the individual in a pseudo, fear ridden reality. I do not prescribe to rigid belief systems but it seems to me, at least at the moment, that entheogens are a natural gift from a universal intelligence that in the final outcome we all are. They are gifts to ourselves from our true nature.
But! What have we done with them in the past except to denigrate them and turn them into a fearful prospect through misuse and disrespect.
Fortunately there is a scientific and medical renaissance in recent years regarding how much of an astonishing gift they actually are.
Unfortunately it will take some time for the old ideas of what we considered them to be to disintegrate from our stored and fearful beliefs.
The snowball is rolling downhill and gathering weight and speed and will grace us with tools that have been used in other cultures for thousands of years. If not I fear the demise of humankind.
All of the other systems to wake up human beings have been used with little or no success and so we need a kickstart. At this late stage for humans, entheogens might start to kick.