I'm a chaos player
Since when? Shouldn't that be, I am a 40K player that occasionally plays Eldar/Dark Eldar but who also posseses a nauseatingly beautful nurgle army which is currently rotting away in my closet
As someone who has actually played Chaos Space Marines this year

I don't personally need to be top of the heap, I just want my spikey bitz back!
And why not change the fluff, GW has been doing it constantly. Did ya check out the background on the Marine Librarian in the White Dwarf thread. Half-eldar Marines?!?!?!?!?!?
Anyways, didn't half of the Titan legions, Adeptus Mechanicus etc also go over to Chaos during the HH? Surely they haven't been idle in the last 10 millenia? Might they not have cooked up something new, unrestrained by the Luddite-like ideology of the Imperium? Just sayin'.