To me, what's interesting is the ways the lens of Sci-Fi can distort one's ideas. The flying car is the most classic, wrong science fiction prediction ever (even if it should come to pass). The way that the flying car fails is that ground motion doesn't translate directly into flying motion - flying transport has achieved some equivalence to ground motion but going from a "flying bus" (a conventional airplane) to a personal "flying car" turns out to be a vastly harder problem than going from a train to a car.
One might say, Sci-Fi involves extrapolation of experience, since the writer ultimately has describe the experiences of their characters. So what's missing overall, is "the dull parts", as least for "classic Sci-Fi", which has historically been adventure novels extrapolated into a new world (the novels of Robert Heinlein being the model).
Here, in a sense, dystopian and other novelist genres can give further insight a leg-up because they aren't constrained to make the future fun.
A really interesting story is EM Forrester's story "The Machine Stops", predicted many aspects of the Internet in 1909!