Space marines are definitely prized as fighters in the arenas of Commorragh but space marine fans naive, proud insistence that that's all they're used for is hilarious. Yeah I'm giving the civilization that staves off death by causing suffering with an entire caste of horror movie surgeons a big huge dude that can repair bodily damage on his own and survive nearly all bodily trauma and all they're using him for is fighting. Sure
One single space marine could provide enough pain-nourishment to feed an entire family of Drukhari for a millennia. Think charitably. Share <3