I already replied in your previous discussion about KOTOR2 with what you are exactly looking for. Previous Post

I liked KOTOR2 but yeah Keria was annoying, I was mainly playing the game despite of her cause other characters stories are much more interesting and the influence thing is much more interesting than side stories for NPC like in KOTOR1

I'll admit, I haven't read or saw all the expanded universe material, but from what I've gathered (and I could be wrong on that), but being a sith is pretty much like being a CEO (just replace power with money). You become a sith because you want power, and it doesn't matter how much you have, you must have more and more. It's kind of an absolutism philosophy.

I remember that the Jedi were based on buddhism, but I don't know enough about it to confirm it.

Jedi's comes off as moral absolutist while also inhuman.

Love is a path to the dark side. I wonder how the sith practice love.

Must be wild in the bedroom (*imagines a couple having sex with electricity while screaming "UNLIMITEEEEED POWEEEEEER!!!"*)

I remember that KOTOR1 established that it's not love that leads to the dark side (if I remember well, it was a dogma that was added thourgh the millenias, like most dogmas). It's out-of-control passion (even Ultima VII Part II touched on that).

Yeah, I kind of liked when New Jedi Order tried to adopt Unifying Force as their philosophy as opposed to Living Force. Pitty the plotline was scrapped.
As for the Sith, Lumiya and her 'order' was rather interesting and certainly not power-hungry.

The game is as much her story as it is the Exile's, but because of her nature she's usually in the background, only stepping forward on occasion to push events in the right direction. I didn't warm up to her or explore her character till after a few playthroughs as she's revealed to be one of the most emotionally damaged people on the ship, and that's saying something on the Ebon Hawk: Voyage of the Damned. Everything she went through was just to prove she wasn't a colossal failure as a teacher and she parades her prized pupil in front of the Jedi Council because after all this time, she STILL craves their approval.

She isn't perfect. If she was then she indeed would be about as likeable as those fish & chip flavoured crisps.

Showing how the Star Wars universe ‘doesn’t make any goddamn sense’ isn’t the same as saying Star Wars and its fans suck. Blade Runner doesn’t make any sense, and that’s a masterpiece. KotoR 2 came out right after Attack of the Clones when Star Wars was arguably at a creative low point, and made a hell of a lot more sense within that universe while actually contributing to it.