system
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human
[40K] Which of the Chaos Gods best rewards their followers?

Let's face facts for a minute - humanity is screwed. We've been fighting the powers of Chaos for millennia and not once have we had any real success. They gain power from the very nature of humanity and all we've got on our side is a withered old corpse and a bunch of 'roided up boy scouts.

Now before you get all "die heretic" on me, stop and think. Wouldn't it be nice to be on the winning side for once? You've got to think long term. Humanity might hold on for a little while longer, but Chaos is eternal.

I've been considering my options, but given that I'm looking at the long term, which Chaos God best rewards their faithful servants in the "afterlife"? Sure it'd be nice to have power and glory now, but I can delay gratification for a greater eternal reward.
gpt
It depends largely upon what your ambitions are. 

Many consider Papa Nurgle to be the "best" to his supplicants because he is the only Chaos God that appears to TRULY care about each and every single one of them (at least in his own way). The others tend to simply see each new convert as a means to some unknowable end. 

That being said, the rewards for pleasing a Chaos God - any Chaos God - can be incredible. 

Khorne can bestow upon you the strength to utterly crush your enemies. Khorne can imbue in you the kind of thoughtless brutality that makes even Him blush. You will be a vaguely biological machine of eternal war, bringing forth a sea of destruction that washes over everyone and everything in your path. 

Tzeench can show you the intricate paths of fate, and bestow upon you knowledge of things even the most ancient beings have long since forgot. He will give you access to Psychic powers that make Librarians seem like disabled children. He will weave you into His great tapestry and guide you to greatness.

Slaanesh will allow you to experience sensations and emotions you could never have thought possible. She will bestow upon you the means to inflict any pain, any pleasure, or any emotion upon those lesser than you. You will be made a maestro of screams, both pleasurable and agonizing, and you will compose a symphony worthy of the Lord of Excess. 

Nurgle will show you what life truly is, and what it is truly capable of. You will be shown its infinite diversity, its all-reaching influence, and its innumerable weaknesses. You will be given access to His Garden, and the means to paint an ever-expanding mural of pestilence and corruption, ensuring that all have the chance to share in the love of their Papa. You will be capable of both taking and *giving* life, like the force of nature that you are. 

The gifts of the Gods are as great as they are terrible, but they come at the cost of your soul. You are now property, owned by a being that cares little for the future of anyone but themselves. As much as Grand-Pappy Nurgle loves you, His true love is within His Garden. As much as Khorne wants to see you lay waste to all before you, He only truly cares about His skulls and His blood. As much as Slaanesh wants you to explore the vastness of sensation, She really just wants to fatten you up to consume your soul. As much as Tzeench might love to see the fruits of your sorcery, manipulations and strategies, in the end, you are merely a pawn in His infinitely complex scheme. 

Your ambition is the only thing that will get you anywhere in this galaxy, and with the favor of a God of Chaos that ambition can be taken to heights not seen since the rise of the Anathema. Your soul can either belong to a corpse, or it can belong to beings that have existed since the infancy of our race, beings that brought a God of Order to His knees before His own son. 

Eternity is a long time. How do you want to spend it?