McMarbles said:
You know, I'm unaware of any famous alien, elf, or vampire authors, yet people seem to have no problem coming up with hundreds of sci-fi, fantasy, and horror novels every year. Well, George R. R. Martin MIGHT be a dragon. I've never met him. But still... I suppose you could come back with "Well, aliens, elves and vampires don't really exist, but black, asian, and hispanic people do!" And I suppose you have me there.
If only there was some convenient way you could access tons of information from the comfort of your chair...
To be fair, it's exceptionally rare for any of those aliens, elves, vampires, or whatever other characters to think or behave differently than humans. The perspective of such characters is, largely, the same as the author, because it takes a special kind of person to be able to properly convey a mindset, perspective and/or worldview that's alien to their own.
I'm not saying it's impossible (it's most definitely not), but, by Sturgeon's Law, 90% of such characters will fail to be anything but 'normal people', for whatever value the author has of 'normal', with some cosmetic changes.
The same holds true for properly representing the experiences and perspective of someone of a different race. As an upper-middle class white male, for example, I'll never be able to understand the kind of hardship or discrimination a poor black woman has to deal with. I have an intellectual understanding of it, but I lack the emotional understanding that is required to form a complete perspective. As such, I'd probably write a poor black woman very poorly, as I'm just not tuned to understanding why some things that seem so trivial to me would be difficult for her.