You know, a lot of people are loath to go to an orchestral concert because they are intimidated by the thought.
Everybody uses mime and gesture in real life, though we don't realize it. It's very useful as a performance technique, though it can be boring to watch on its own.
We seem to be made to suffer. It's our lot in life.
Don't call me a mindless philosopher, you overweight glob of grease.
We have people being a little uncomfortable in their life on Earth with finances and so on, so Science Fantasy or Science Fiction allows people to think that there are possibilities beyond the gravity of our planet.