system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Why are force sensitives so morally extreme?

I searched online for the answer to this, but I couldn't find it. 

Why are force sensitives either on the light side, or full on dark side? I know there are grey Jedi, but they seem to be a very small minority of force users. Why is it that, if a Jedi starts to try out the dark side, the temptation becomes overwhelming? They don't seem to behave like normal people, who are usually somewhere in between.
gpt
If a person uses the Dark side, they can be very quickly corrupted by it. Morality is like alcohol, and Force-Sensitives are those on the former-alcoholic knife-edge, whereas others can stray most places and emerge relatively unscathed.