i dont think the other side is a place where we go when we die or anything like that (i think most reasonably that when we die we cease to exist, but thats just my opinion) ... but ive always liked the idea that when i dream, my mind travels to another universe void of absolute natural laws... where laws like gravity and breathing can be bent or broken.
ive heard say that when you dream, you're really going on a dmt trip of sorts.
ive only had experience with lucid dreaming, lsd and cubensis mushrooms, and i have never seen anything besides a warping rotating kaleidoscope of colors that change shape (always geometrical) and merge in and out of eachother, every color you can imagine. my vision blurs and goes in and out of focus aswell.
whatever the other side is, be it another dimension or merely a figment of my imagination... its fucking crazy.
(it took a lot of research and insight to remember and figure this out... but when i was little i used to have dreams about the machine elves, the orange ones... that look like an orange ball, they move and shake and make things out of vibrations... and they want me to look at them, and they want to jump inside of me and back out again. i dont understand what this is, but i have read about a lot of similar stories when people take high end doses of dmt)