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Regarding the Sith and Jedi, I disagree with you. A Sith doesn't know how to love, while a Jedi does (although this isn't in line with the Jedi Code and often leads them to the dark side). For a Sith, power is the most important thing, and they don't understand what mercy is, whereas mercy is a core principle for a Jedi.
But in general, there's a lot to discuss here. :D
P.S. Anakin Skywalker, for example, was a good person, but the fear of loss twisted him.
P.P.S. Of course, being such a closed-off Jedi, like Bastila (at the very beginning), is also foolish.