All sci-fi (or fantasy) requires of the reader(or watcher) is a desire for the fantastic. To want something more than reality. Any sci-fi story that can't be told in some variation without the science isn't a good story anyways.
It's like having a taste for sushi. As Bruce Sterling once advised a group of writers, "follow your weird" - what sf is selling is at base an unusual POV, not a uniquely challenging intellectual exercise.
About eight years ago I was getting to know this guy who's now my best friend. He was a teacher in a private girls high school the name of which a lot of folks would recognize - in any event he got the idea that the kids in one of his honors English courses would get something out of my answering questions for an hour about my TV script. He did mention that there was next to no interest in Star Trek as such amongst the students.
Not long after that I introduced him to Buffy The Vampire Slayer on DVD. He was initially interested because, he told me, this was the most popular show among the very smartest kids at school.
I'm pretty sure that wasn't because of its scientific content.
