man you should read the book "DMT : The spirit molecule" talks about how we have a a middle section in our brain, which is small, and people believe its our soul, and this is where the DMT takes effect and stuff like that, thus explaining the overly spiritual experiences and contacts with other entities .
Don't allow one person's knowledge to sway your decision; this has to be a personal choice carried out with a reasonable amount of research and preparation. I could expand upon what he said further by telling you that what you believe to be reality, is a facade. You perceive what is around you and react to it based on your senses; these reactions build your emotions, which in turn define your personality and give form to your ego. I am aware that all of this is a bunch of information interpreted by my brain.