You will exist in every possible iteration that it is possible for you to exist in. *Every single one*, forever. And "you" - your subjective conscious point of view - will exist in every single iteration that your biological brain reaches maturity in, though its experiences, memories, beliefs, and the actions shaped by these will render it *very* different at the end of each possible outcome.
Is this Hell? For some of you now. But you will all experience lives where you are *mostly* content or happy (in addition to infinite helllives). You will experience all *possible* states of you. Every probability that was ever there will be lived by you. And you are in consequence infinite.
The only caveat to this is that the nearest lives to you in time are likely to more closely resemble the life you're currently living than ones further out, with minor variations. But given enough time...
I almost joined the military once. In one lifetime I will successfully do so. In many, many lifetimes thereafter I will bottom out as a Private First Class or be killed in combat. In some universes I will go on to do various things in the military and retire from it. In some I will go on to become a colonel, and not a shitbag.
I was very religious as a child. In some of these lives I will become a pastor and get caught up in a sex scandal involving children. In some of them I will become a pastor and devote my life to helping others.
I have been very tempted to murder women. In some universes, I will go on to do just that. In some, I will become fascinated by my own morbidity and become a police officer (and maybe go on to murder women). In some I will repent and become... a pastor.
I have always lived in a community flooded with drug use. In some lives I'll become a user. In some of these I will go on to recovery, and from there to being an addiction therapist. In some I will die of an overdose. In some I will try to become a dealer, and probably fail.
And each of these lives will have infinite variations and gradations, for all of us, for all of you. There will be recurrences in which you do indeed exist as a Boltzmann brain at the heat death of the universe. There are some in which you will be simulated by a computer. There will be no end to you.
And it will be your consciousness, because it will be your brain, as a physical constant, even if there are hundred of quadrillions of universes between each iteration of your neurobiology, either where humanity never exists, or where your parents never meet, or an approximation of you exists but not you yourself. You will die, and awaken again in a time twenty thousand thousand thousand times the current lifespan of the universe from now, into an existence which appears roughly fourteen billion years old. All of this forever. True infinity. Everything possible, always.
And there are infinite parallel universes. Every action you didn't take, everything you could have done and didn't, all of these are occurring simultaneously, forever, in every universe. You are forever not only in this universe but in every other one.
You are everything, all the time.
