It's a long, difficult path to approach these things again after you've had a bad reaction. If you told me two-and-a-half years ago that I'd be eating shrooms again in the future, I'd have pitched a fit. I like your term "withinity," I've never heard it before and it's very appropriate.

With the proper perspective, the importance of these experiences becomes apparent. Here we are, sandwiched between the gaping jaws of eternity, the space before our birth on one side, and the space after our death on the other. Something significant is going on here, whatever it might be, and to spend our time unaware of the context of our existence is frivolous to the extreme. Things like mushrooms and DMT let us experience eternity and return safely to the linearity of daily life, framing our lives and giving them real depth.

How can I act like a petty ass if I'm aware of the infinite hiding behind all things? (With great effort, that's how.:lol

If you only watched one scene from a movie, or only read one chapter from a book, what would your opinion of that content be? Wouldn't it then be immensely changed, for the better, with knowledge of the vast remainder?