Interesting perspective Xechnao, but I don't understand how roleplaying suddenly slams into an impasse when it comes to playing a different race? Or have I misunderstood you?
(I must also take exception to your example here. I don't sit at the table and socialise with my *players* as if I was the sadistic barbarian overlord of the Bloodreaver's slave pits... I socalise with their *characters*... and by socialise I mean cackle with glee as I smash their heads in...)
We all understand (I would think) that every bit of imagining we ever do is just an extension of our own little bubble of experience, from the mundane (I wonder what it would be like to be eating an ice-cream out in the sun right now?) to the fantastic (I wonder what it would be like to hold terrible dominion over a world subjugated to the whim of my magic?). Some dreams are less interesting than others, probably, but all of them can teach us something.
I am just saying that people are not really roleplaying different races in D&D. Players can only be themselves in the situation the game's fluff and their gaming group's dynamics put them into. Having the powers that the "elf" kit and their "class" kit provides does not mean that you can get to be like an elf as intended by the fluff of the game world. So the problematic.