We don’t capitalize “human” because as of now there are no other intelligent species we have relationships with on that level; there’s no need to add that level of “respect” to the word. But if we did make first contact with an intelligent alien species, I wouldn’t be surprised if cultural conventions like whether or not to capitalize the names of sentient species became a thing.
We don’t capitalize “human” because as of now there are no other intelligent species we have relationships with on that level; there’s no need to add that level of “respect” to the word. But if we did make first contact with an intelligent alien species, I wouldn’t be surprised if cultural conventions like whether or not to capitalize the names of sentient species became a thing.