Magic that eats your soul just makes for better stories, do admit. If the Force was not what it was, a good deal of internal conflict would be removed from the series. Evil characters would be just evil. And... And nothing.Simon_Jester wrote:I would argue that there is a very important difference between saying "magic/technology has limitations or downsides" and saying "magic/technology has the potential for misuse."
There is no obvious 'limitation' on, for example, firearms. They are simple to use. It is possible to hurt yourself accidentally with one, but moderately careful handling prevents this. They don't eat your soul, or at least no more so than any other weapon does. And yet, they have tremendous potential for misuse.
Technology that has no obvious downsides is a bit of a cop-out as well. But let us assume, for the sake of the story, that we don't need to see many downsides (except things like the Death Star being possible and technologically advanced Empire wiping out cute cuddly savages). It does not enrich the story by itself, this simplifies the story.
Thanks to the Force and the potency of internal conflict that is generated by the Dark Side - where every character is not above suspicion and anyone could fall to the Dark Side any time - this simplification does not damage Star Wars so much.
For a different space opera setting it would be, perhaps, quite bad to have limitless technology with no downsides. Especially if it helps to resolve key plot points in a Deus Ex Machina fashion.