>>725596545
Because warriors of chaos are metal album cover badasses.
You start as some regular shithead with delusions of grandeur, and you group up with hundreds/thousands of other overly ambitious idiots hoping to prove yourself to the eldritch gods.
If you live, you ascend to becoming a 7 foot tall armored knight who is still climbing the ladder, always proving yourself stronger or to die trying.
If you survive even that, your equals are whittled down by battle and death leaving your warband smaller in number but stronger in power and resolve. You climb the ranks further to become a chosen, and then an aspiring champion, and then perhaps an exalted champion or a true chaos lord.
But even then, you aren't finished. Your ultimate goal is to ascend to immortality as a daemon prince and become one with your patron god, forever playing in their great game.
To pursue this path means you only have three outcomes: Ascension to daemonhood, death in battle, or cursed to become a mindless chaos spawn. There are no alternatives, and there is no redemption. You must prioritize greed for power over absolutely EVERYTHING else, but the potential reward is literal immortality.
>chaos space marines
You're a kidnapped tween who gets injected with mega-steroids, implanted with organs and probably raped by a daemon to become a really big guy in armor with a gun. If you survive, you become...a big guy in armor with a gun and a power sword.
The lifespan of a chaos warrior is SUPER interesting, the story of a chaos marine is just a space marine but evil.