I mean… a
lot of autistic people get characterized in exactly that way. I am not autistic myself, but I do tend to act more on careful reasoning than on emotion, as a learned behavior due to some pretty rough formative experiences where acting on emotion had very negative outcomes. I think we should be very careful about characterizing the actions of characters that look, walk, and talk like humans with slightly restricted or exaggerated elements as “inhuman,” because chances are there are more humans than you think who do act in similar ways. Sometimes due to cultural differences, sometimes due to cognitive or developmental differences, sometimes due to individual differences. But the range of human behavior and expression is incredibly broad, and it’s very rare that a fictional species’ behavior and expression
actually falls outside of that range.
Like, take the excellent post
@Steampunkette made about ways to roleplay elves, dwarves, and halflings inhumanly. It was clever and inspiring, and all of the suggestions in it could make for great roleplaying advice. But none of it is really inhuman. Sure, the lengths of time in the elf suggestions or the poisonous spices in the dwarf suggestions are exaggerated. But crippling boredom is a real human experience, often tied to depression and other mental illnesses. Steampunkette herself caught that the dwarf characterization was ultimately an autistic stereotype. The Halfling suggestions sounded like they could have been describing my partner, who has severe social anxiety.
My point is, any way you might try to characterize a humanoid species as alien is bound to fall within the range of the human experience, because that’s what we’re all drawing from to inform our fiction. Therefore, the idea that if orcs (or whatever other fantasy humanoid species) have a rich, diverse range of experiences and expression, they’ll just be the same as humans doesn’t hold water to me. Every fantasy humanoid species is the same as humans. We can exaggerate or restrict elements to create a bit of exotic flavor, and I think it’s fun and interesting when we do. But we shouldn’t let the fear of them seeming “too human” stop us from giving them rich, diverse, interesting ranges of experience. If “alien” has to mean “homogeneous,” then I don’t want my fantasy species to be “alien.”