There are no uniquely non-human races in D&D. Even if there were, we would still describe them in human terms because that's what we do with everything. We think of cats and dogs in human terms because we don't really have any other way of framing the description.
Even truly alien outsiders just get "they're wacky" then they're attributed more-or-less human motivations and emotions in play. All races in the PHB are just an extreme take on some aspect of humanity because we can't really understand how a species thinks.
Even truly alien outsiders just get "they're wacky" then they're attributed more-or-less human motivations and emotions in play. All races in the PHB are just an extreme take on some aspect of humanity because we can't really understand how a species thinks.