Is the force genuinely comprised of two sides, or is the dark side merely a corruption that undermines the balance of life/the force itself? Obviously, the lore gives us conflicting answers:
In the films, Obi-Wan refers to Anakin destroying the Sith and thus bringing "balance" to the force. This indicates that the dark side is something inherently abhorrent or unnatural. George Lucas himself clarified and upheld this interpretation in an interview (which I can't find, but whatever).
However, the expanded universe properties (The Old Republic, Dawn of the Jedi, Jedi Academy to name a few) appear as a whole to be pretty adamant in their depiction of both sides as an intrinsic and necessary part of the force - with DotJ going so far as to suggest a Yin Yang type situation where both elements must be studied in order to reach genuine understanding and balance.
I ask this because the latest Disney film was the first canon entry to mention "the dark and the light side," which would seem to support theory 2. This is doubly weird, seeing as Disney appears to want to get rid of everything eu and stick to the canon films as much as possible in every other respect.
The first theory is obviously more Judeo-Christian in outlook, while the latter is more in line with Taoism and other esoteric Eastern religions. It seems strange that George would go for the former over the later given his desire to emulate Eastern ideas.
What do you think? What is your reasoning? Please provide sources.
More to the point, how do you conceive of morality and the existence or non existence of universals and abstract objects (like good and evil) in relation to all of this?