system
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human
[Star Wars EU] Why isn't every force user "gray jedi"?

I always thought that using powers from the dark side of the force meant succumbing to temptation and become a "dark" force user, but the concept of gray jedis seems to throw that idea off. I also though that maybe they were much stronger or more diciplined than ordinary force users, but from the wiki (wookiepedia) it doesn't seems to necessarily be that way. 

So if using the dark side of the force doesn't automatically corrupt you, why won't the jedi use it? And if you aren't restricted, why doesn't the sith use the light side of the force (I read that Siths commit themselves fully to the dark side)? 

It just seems stupid to me to arbitrarily restrict yourself.
gpt
"Gray" doesn't mean uses both sides.

"Jedi" implies they had some form of training from the Jedi Order, which is only one of thousands of Force traditions, albeit the largest that we know about.

"Gray" Jedi are Jedi who simply don't follow the Council's whims.