The way I see it, all the fantasy races ARE humans, just humans with a different emphasis. The ones called "humans" are the vanilla people that you compare actual humans to, and then every other has its own slant on humanity. They all still have recognizably human emotions, desires, social structures, and so on, they are just each a study in some particular area. Maybe you have a race of people who are more spiritual, or a race of people who are more warlike, or hierarchical, or egalitarian, and so on.