>>96712927
>Actually they probably remove their sex drive along with their emotions.
Most of them do, but hardly all of them.
>Wonder who has less of a libido Tech Priests or Space Marines?
Tech-Marines.
In my head-canon, both are capable of normal life just fine, but it's just really not interesting to them aside from rare individuals and families take too much effort that could be devoted to combat training.
But tech-priests have it easier with their little tech-nosnake nests.