We are not alien! [ OKay, maybe some of their genetics are from like, various earth animals, but no xenos! ]

Our aspirants choose this honor, we are not parasites. [ As for the steroid part that's like super weak stuff compared to all the combat drugs raging through his body at any point on the day when he's angry, like now. ]

Many call us monsters, or inhuman, but we sacrifice all that we are, all that we could be, for the destiny of humanity. We are no more monstrous than the galaxy which requires our existence, full of Orks, Eldar, and other... foul beings.