Part of the reason I am taking the time to express my fears and ask these kinds of questions is that I just wasn't expecting these deeper levels to be the way that they are. What I mean by this is exactly how they feel; I had read about enlightenment before, and about mystical experiences. I've had one out of body experience, countless dreams and lucid dreams, as well as experience with Reiki, Chaos Magick, auras, and spiritual energy. But you are right in that doing psychedelics changes you. I think a natural progression of thought and experiment should lead to this realization. And not just in the mundane way of "now I've done 'drugs' so of course I would be changed". A change that takes place in core, fundamental values and beliefs. My beliefs had shifted around before, especially in high school. But this change was unique in that it shifted me back into a metaphysical paradigm but with the added insights I gained from psychedelics. My progression throughout my encounters was all well and good until my breakthrough trips into the realms of "mystical" experiences.
Its just one thing to talk about oneness, one thing to talk about sensing things like spacetime break down, but different to actually experience such things. I feel like if it weren't for my past experience with metaphysics and esoterics that I would seriously high tail it away from psychedelics. And I feel its been like this for many, who eventually reach a certain place they may have been looking for (whether its more experiences, pushing limits, or for genuine exploration or healing) that is just too unusual or too much to handle. I suppose a natural response would be fight or flight, or in my case to wait it out and commit to breaking through this barrier of fear. The fear may not go away, but as long as I can come to terms with it and deal with it, I know it will be ok for me. It shouldn't even be this scary, but for some reason the visualizations, feelings, and phenomenon I was used to had given way to the conceptualizations in these previous posts. It is because these feelings, perceptions, and information is so profound, that I believe it was causing my mind to recoil away from it. I say this because up until the "heroic" dosages, "Z" has been very friendly and peaceful. Now I know that there are deeper levels, and its not such a "scientific" or mechanical process of incremental increases in dosage relating to incremental increases in intensity.
Out of respect I will not say what Z is, but I would categorize it as psychological > hallucinogenic > ego. I've categorized it in this way because it wasn't until discovering and pushing boundaries to a very high dosage did I encounter ego death-like phenomena. It is also several hours worth of duration too, so a middle range dosage would be about 8-10 hours while heavy/heroic would be between 10-14 hours total. Its also interesting to note that post heroic dosages, when I had done medium amounts of Z again it has been a lot stronger than before. Again not sure specifically if it has to do with my own brain chemimstry, reverse tolerance, or my relationship with it. I would imagine that it would be a combination of them. Anyway, with this in mind it has been generally gentle, Earthy, and humanistic, up until the heavy/heroic level. This is where things begin to switch from psychological-hallucinatory to visionary-entheogenic-mind expanding and possibly ego death-beyond. I would definitely like to get to a point where I can seriously explore reality at the depths of heavy/heroic, since like you said there's more to it than just the ego death. From what I've seen so far, and the responses I've read in this thread, it definitely appears that the psychedelic space is vast enough that possibilities seem endless.
I also want to work to bridge the gap between non-psychedelic users and psychedelic users. Part of this goal is being able to communicate what I have encountered on psychedelics, and so being able to verbalize these phenomena is key. However this in itself is a challenge, although one I have accepted. So its nice seeing that there are others out there that are able to verbalize this stuff both eloquently and factual. It also shows me I'm not the only one thinking this way lol. (kinda jumping around here)
As with science and mathematics, I agree that these are ways to interpret the universe around us. I have both read and seen how it is that there are these very specific laws and attributes that make our universe (and life) possible. It is amazing that everything should be just right for the universe to form the way it did, and for life to appear on Earth as it has. I feel like these facts are emphasized even further on psychedelics and a greater appreciation is gained for them after the fact. At least for me it has lol.
Yes, I think that intellectually speaking that the void, nothingness, ect shouldn't be scary. I'll have to see if its good for myself :P, but your insights have shown me different explanations for these different things. I think once I can come to terms with these things myself, I will have a lot less trepidation that I hold right now. I think I said this above, but I don't think these things should be scary, but the felt presence of them is somehow daunting for me. The user Dreamer was outlining this area well, I think. Dreamer basically expressed my own fears as well as the way she dealt with them. This is something I can definitely learn from and apply to my future experiences, as well as the input you've provided. I want to be knowledgeable of these realms, since I want to be able to verbalize and express them for myself, so I will eventually be experiencing them for myself.
Right now I can mostly just meditate and read up on things, and do what I can to mentally prepare for future journeying. I definitely think that there's no rush, and see application for the less intense experiences as well. I started small with psychedelics and have been gradually building to where I am now. However there is a necessity for me to have these deep experiences too, since experiencially I need to eventually be where you and other experienced users have reached. This is for my own ambition and goals though, and for other people I can see only a few high dose experiences doing the job. I just know I'm in it for the long haul though and that everything I have been involved in has led up to psychedelics. Strangely enough, I was brought to this very area despite everything else that has happened in my life. I had said that I didn't believe in coincidence before, but now that phrase has new meaning.
Lastly, I think that "fate" definitely has a new meaning for me. Perhaps my ego, or id, didn't want to believe that to be true, but I don't know it seems like there is a set direction for things to move in. I had experienced the kind of "chemical processes and behaviors determining actions", or a kind of predestined biology, before under psychedelics. I guess I just assumed this to be confined to wild life and not humans lol, but I am beginning to realize the meaning of this for humans. What "free will" is seems to be the most likely course of action, determined by behavioral, biological, and chemical reactions and needs of the mind and body. In this sense it really does seem like we are machines, or mechanisms for the consumption of food and disposal of waste, although I know we are also more than that. There is the whole metaphysical side to take in. And also, there are the unknowable things too. So even if science can one day calculate out exactly what state the universe will be in, in regard to spacetime, I don't think it will cause me distress as it would have before.
Edit: So OK it wasn't that much of a wall of text, but it was more than my previous post!
I also tried to find a video to post, but all I could come up was something from One Piece lol. This is how I've felt on "Z", because in the medium dosage range especially, it is very calm and chill. Like whatever is happening around you, you'll comprehend it, but are in such a state of bliss/peacefulness/happiness that you can just relax no matter what lol. (and this will be a legit spoiler for One Piece fans if you've not reached this far)