Editing Female Space Marines (section)

==A Slightly More Reasonable Answer==

The problem really is one of terminology. Women can wear power armour, certainly; the Sororitas practically make it formal wear. Women can, through steroids, incessant bodybuilding, a high protein diet, psychological and emotional conditioning if not already manly enough in the brain, and a little genetic modding to bring it all together (mostly to change how their bodies react to testosterone and to accept and produce laaaarge amounts of it), be as buff and rocking as a Space Marine though obviously without whatever biomancy Warp bullshit makes Marines so much stronger than their bodies should be physically capable of (and to reach this level, the woman would ''maybe'' still have female genitalia but otherwise be physiologically indistinguishable from a very manly man). Pointlessly expensive and inefficient compared to grabbing a guy and shoving a growth hormone in him.  Although, this does bring up the possibility that there already ''are'' "female" Space Marines but they just...[[Grimdark|aren't female anymore]].  We'd never even know.  But what really makes a Space Marine a Space Marine is all of the [[Geneseed|extra genetically-engineered organs and DNA and whatnot]] cloned from the Primarchs and implanted in the right way, which is impossible for women for reasons the Emperor himself ran afoul of. The closest thing to an exception in the fluff is any experiment involving Fabius Bile. It should be noted that the said woman is effectively lobotomized (and even there, the potential Chaos Space Marine candidate must be male since even that sick thing requires gene-seed to 'work'). And even if he did make you a Female Space Marine for reals, she still wouldn't be a "proper" Space Marine, just a weird, mutilated, Chaos-infused entity that approximates a Space Marine but [[Ultramarines|can never truly be one.]]

On the note of the Fabulous one, the crazy old fuck basically cloned himself but then decided to make the clone female and have a [[Warhammer High|'daughter']] just for the [[lulz]]. And the best/worst part is, he still made a better job out of parenthood than Big E. Bile's also experimented on damn-near everything (including the entire civilian populations of several planets) at some point or another for his attempts to duplicate the methods for creating new Space Marines, so there's ample evidence to suggest that [[/d/|he's tried it at least once]], ''going as far as saying Big E. was an idiot for making gene-seed only compatible with men and thus cutting off half the potential supply of warriors''. Fucking [[Slaanesh]]. In his own recent novels, his retinue has included a champion who is effectively, but not technically, a female Space Marine; when she claimed some Emperor's Children power armor on the battlefield, it bonded to her like Chaos Armour from Fantasy does, and she's tougher in a fight than most true Space Marines.

Another possible reason is that all of the Primarchs are men, with male genes, thus meaning that, [[Samus|unless there's secretly a girl Primarch out there somewhere,]] female Space Marines cannot be made in the traditional sense. Space Marine blood alone can eat through many durable materials due to the mess of chemicals in them. Any attempt to breed Space Marines the traditional way would be almost guaranteed to fail in a tragic fashion.

Of note is the fact that despite the names and histories of the two missing Primarchs being utterly obliterated from Imperial records, they are still unambiguously referred to as sons of the Emperor.