I had intended to write about how good sci-fi movies are hard to come by but instead I found an excerpt from an Isaac Asimov essay that I think says it best…
“ […] Eye-sci-fi has an audience that is fundamentally different from that of science fiction. In order for eye-sci-fi to be profitable it must be seen by tens of millions of people; in order for science fiction to be profitable it need be read by only tens of thousands of people. This means that some ninety percent (perhaps as much as ninety-nine percent) of the people who go to see eye-sci-fi are likely never to have read science fiction.
The purveyors of eye-sci-fi cannot assume that their audience knows anything about science, has any experience with the scientific imagination, or even has any interest in science fiction.
But, in that case, why should the purveyors of eye-sci-fi expect anyone to see the pictures? Because they intend to supply something that has no essential connection with science fiction, but that tens of millions of people are willing to pay money to see. What is that? Why, scenes of destruction.
You can have spaceships destroying spaceships, monsters destroying cities, comets destroying the Earth. These are called ‘special effects’ and it is what people go for. A piece of eye-sci-fi without destruction is, I think, almost unheard of. If such a thing were made, no one would go to see it; or, if it were so good that it would indeed pull a small audience, it would not be thought of as science fiction of any kind.”