Fuuuu.. LEAVE SCRIPTING ALONE! I'm talkinf about Lore!!! Elves, humans and beast races and all of these creatures have free will, but Daedras don't! Is it so difficult to understand...?
EDIT: A user have linked an article that shows that Dremoras seem to have free will. But at the same time, it shows us why they couldn't be a playable race anyway: they are crazy homicidal psychopaths...
By the way, I want to play as a wolf. Bethesda, leave me play as a wolf!
They make the game. They include things that make sense.
Elder Scrolls lore can change with each installment of the Elder Scrolls franchise.
We are talking about a commercial product, a game, that has not reached the market yet. Some changes to prior installments have already been made public. There is no reason why such an addition couldn't be made at this point. More options for the player > less options for the player.
If you weren't interested in playing a dremora, then you wouldn't have to play a dremora. But if it is added as a playable race, then it could be an option for those who are interested in giving it a try.
Why are you opposed to the player have the option of playing a dremora?