> It's my understanding that Psilocybin and LSD do not produce hallucinations (e.g. seeing something which does not exist. I'm aware of the difficulty of qualifying the previous sentence) versus changing your perception of phenomena.

Your understanding matches my anecdotal experience over a couple dozen LSD and psilocybin experiences. Largest doses for me are 10 ‘tabs’ and 7g shrooms.

The visual effects make colors more vivid, textures will shimmer, objects will morph and warp, some things will have a ‘halo’ around them, things of that nature.

I’ve never seen something that isn’t actually a real object while tripping, just perceptual changes on real objects, and I’ve never forgot that I’m tripping while tripping.

> Personally I have reached a personal belief that entheogens allow you traverse the realms of existence

This I don’t agree with, there’s nothing profound or magical about tripping. It’s just a way to perceive things differently, none of the stuff you think of during a trip is actually profound, it just seems that way. If you don’t believe me, try journaling or recording your thoughts on video while tripping and watch it while sober.

It’s simply a chemical that changes the way you perceive things, that’s all. Nothing spiritual or mystical.

FWIW I’ve done pretty much every common drug aside from MDMA (excluding research chemicals).