Restarting this old thread, because I don't feel like necroposting (or looking back to find the old one).
If you could be anything in 40k, what would you be, and why did you choose that over all the other various things you could have been?
* No special characters, please... they end up being a bit overdone.
To start it off:
I'd be an Imperial Psyker. Sure, I could be a Sister of Battle... but I doubt I'd be religious enough for the position. And a Guardswoman would probably mean that I die a horrible death in the meat grinder wars the Imperium has to fight. A female Space Marine would probably piss the other Space Marines off (Which might be worth it...). And I don't think I'd really want to be one of the other races save for maybe an Ork-- Eldar have to live a life of extreme inhibitions, Tau are deeply segregated, Necrons are Necrons, and Tyranids barely think to begin with. An Ork might be interesting, but even then I don't necessarily love fighting enough to be a proper Ork.
While being an Imperial Psyker wouldn't be the most pleasant thing to be sure, at the very least I'd probably be off of the battle lines-- unless I somehow became a Battle Psyker, in which case I'd hopefully be able to use my powers to regenerate any wounds I took anyway (biomancy). I'd have to be particularly careful with my powers in order to prevent daemonic possession mind you... but having to always be on guard sounds better than suffering in the polluted, unforgiving factories or deadly, monster-filled warzones at any rate.