Okay please don’t make fun of me but:

I think there will be some sort of re-incarnation. Like not religiously, but like as property of science that we still have yet to discover.

Like I do not believe in dieties, and I don’t have any religions, but I think there are some “energy” that makes up “you” and when you die, that “energy” kinda just float around like the many cosmic particles that goes around the universe randomly. Since there’s gravity on Earth, this “energy” likely aren’t gonna go outside of the Earth. So that “energy” will randomly find it’s way into a living being when its bring conceived, very likely somewhere nearby the location of your death.

Like think about it.

Are you really only gonna exist once.

Dead for billions of years --> Alive Now --> Dead for the rest of eternity?

OR

Dead --> Alive --> Dead again --> Alive again --> … (repeating forever)

I mean, you won’t remember anything, its like you are a camera that is recording (aka: experiencing existence), but you lose the SD card (memories) at every re-incarnation.

Okay I know I sound like I’m inventing another religion 😅, but like scientists didn’t even know about atoms and the electron confugurations until like the last few hundred years, who knows… maybe eventually we’ll find the secret “energy” of life 🤷‍♂️

So TLDR: I believe you get get “re-incarnated” as a random living being near where you died.

(I mean… it’s a great way to deal with death anxiety. So maybe I just re-invented religion again 🙃)

Edit: So I guess, if you are gonna believe my theory, your goal in life should be to pass on as much knowledge you can gather. Write an autobiography, document your entire life. Archive every news story, and media, movie, TV shows, games, anything you enjoyed or anything you think other people should know. Imagine you are attempting to pass this knowledge on to a future re-incarnation of yourself.