I always play a dunmer, in any tes game as my 'main character' then i usually make a couple of side characters to have fun with
I've played many other races, but Dunmer is my usual default. Until, in Oblivion, they had the same voices as Bosmer. My awesome Dunmer squeeling like a damn Bosmer was...unacceptable.
Anyway, back on topic:
I've seen many times before where posters have argued that the game tries to "goad" you into playing as a Dunmer. They're easily the most versatile race in Morrowind, with stat bonuses to a wide variety of stats allow you to play as any variety of warrior, thief or mage type character. They offer the largest variety of faces and hair styles for customization of your character, and appeal to many people's sense of awesome with their deep ashy voices, gray skin and red eyes.
For these reasons, the Neravarine is often thought to default to a Dunmer Male in most people's minds.
Now if this were made into a movie, I could see a Male Imperial being substituted for ease's sake.