Eh elves don't exist in the real world yet we have a lot of people jerking off to them dancing on mailboxes. Something doesn't need to exist for it to be someone's aesthetic. Neltharion apparently likes his women curvy and his men athletic and of all colors.
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I also find it interesting how clearly eastern the design is; Western RPGs tend to depict anthropomorphic beasts as largely bestial but human shaped while Eastern RPGs make them humans with a few bestial features. Shows what the audience for this race is. What's next, catgirls?