Originally posted by Kazenji
From what i'm reading Ahsoka is already one of them.
And while that is canon it is not particularly relevant.
Falling to the Dark Side is very very easy. Doesn't matter if you're a young dumbass like Anakin or a veteran user of the Force like Dooku. And once you fall you're basically doomed to live a miserable life. How would trying to walk a life on the razor thin edge between the two not end terribly?
More importantly why would you want to? The Jedi Order kinda sucks sure but overall TPM proves that the really do make the difference between a society being conquered and changing for the better. It is ultimately a good Order that needs a little bit of freshening up to not be so outwardly cold. Luke doesn't save the day in RotJ by following the orders of his masters but by making his own path that is still 100% Jedi.
The Sith are categorically evil to the Nth degree with a penchant for mass genocide and asking you to kill father figures. Messing with the Dark Side leaves everyone that bothers with it far far worse off than they otherwise would be. Anakin tried it and for his troubles was left without limbs, a lot of skin, no friends, and lung trouble. And HE was the lucky one. The Dark Side offers no obvious benefits to either the user or the galaxy as a whole.