This is for discussion.
It seems like most science fiction and fantasy films are about Good vs. Evil on a large scale. While dramas will often focus on subtle human dilemma's - most science fiction or fantasy puts the entire world, civilization, or universe in peril.
Lord of the Rings - The darkside threatens to take over.
Star Wars - The dark side of the force threatens to take over.
The Matrix - The dark side has already taken over and we're just realizing it now.
I could go on and on.
There are a few exceptions... one example:
Blade Runner - This is a story within a world where ethics are questioned, but the universe/world/society is not hanging in the balance. It is also not labeled as good or bad.
The first three examples are huge successes immediately. Blade Runner took a while to find an audience and is now considered a classic but was received with mixed responses.
I wonder if audiences like the good verses evil plots in science fiction and fantasy because sci-fi/fantasy is inherently a metaphorical struggle of good and evil that people can identify with in their own struggles during the day or their own life experience. Alternatively, it could be that sci-fi/fantasy is inherently huge and exotic and so you want the world to hang in the balance. Or... is it just that the genre tends to lean that way and it becomes self-fulling that the plots end up this way.
I'd like to hear everyone's thoughts on this. Have you noticed this? Can you think of immediatley successful sci-fi fantasy films that did not have the world in a decision between good vs. evil?