For selfish reasons, I'd pick Love and Deepspace so I can frolick through time and space with 5 (soon to be 6) different boyfriends, hunting wanderers with superpowers.
Love to be governed by an undead theocracy that persists through the deliberate cycling of apocolyptic events, because they've got 3D underwater volleyball in the capital.
Unfortunately if that were the case we are still many years from discovering the Epstein drive. Still having to deal with the oligarchy and shit conditions unless you are the 1%
My favorite fiction still isn't good for most people, Hard Sci Fi.
Given the fact that 40k lore goes back to the present day and before that (the emperor as an immortal being exists way before the 21. Century), there's a lot of room between you basically live in the same situation as before (just with a living emperor in your timeline) and you're very much fucked (living in the 41. Millennium)
As long as you avoid "suicide" in A-M or any similar actions, you're good.
There's the occasional attempt at dismantling the universe, but that happens in all multiverses if you think about it.
Notice how the ... dermis is stripped off, right up until about the area the faceplate of a CP/OW stops, and connects into the rear/neck part of their headgear?
This guy is either a dead, former CP/OW, or an early attempt at making a human into a CP/OW that... didn't work out so well.
... This is basically confirmed in HL Alyx, you can find some OW with... very similarly fucked up faces.
Once the mask goes on... taking it off will almost certainly kill you.
Reading The Beginning After the End I'd probably be nobody special without abilities in a nation at war... Fairly screwed. Might be an engineer or scientist working on steam engines or trains.
Probably DC Comics. And it depends what my role in this universe would be. But knowing my luck I'd just be a random civilian that gets wiped out during the latest rampage by Atomic Skull or something. But at least everything gets reset every few years, so that I could live again to be super villain fodder another day.
40K is actually a brighter universe than our real life one. The Emperor might just win and make some sort of heaven on Terra for humanity, becoming a techpriest can make you immortal, there is an actual afterlife and source of free energy.
Meanwhile, we are doomed to be captured and tortured by Rocko's Basilisk in real life, and the universe is doomed to repeat in cruel cycles.
I disagree. The Imperium of Man is basically slowly inching towards its downfall with corpse starch (i.e. ground up corpses) being a common food for hive cities and the Inquisition being an ever looming threat for the populace. Not to mention that if you ever have have the misfortune of being near anything Chaos-y, you are often greeted by the Ordo Hereticus before your life is snuffed out. And considering that Belisarius Cawl frantically fell into prayer when confronted by a powerful AI core of old does show that the Adeptus Mechanicus are far from their power way back when, let alone any promise of immortality for the masses.
Psychic blanks have it even worse, as they might not even be connected to the warp, meaning they might just fade into nonexistence after their death. And overall, being a Chaos Worshipper isn't that great as well, as most citicem are not treated well, not to mention that the ruinous powers will slowly drive you insane as well.
Last but not least is that the end of the whole 40K in-universe might be overall crawling to an end, as the Tyranids might be unstoppable by organic beings (apart from possibly the Orks), so it might be that the universe-wide apocalypse is slowly inching closer, leaving only the Necrons behind after the Tyranids seek out the next galaxy to devour.
I'd rather choose the old boring life here in this universe any day over the one from 40K.
I'm just saying to make it clearer. Really what I mean is, the ruling monsters will want to claim us completelly, and violate us in every way for eternity (and not in a sexy way either).