Of all the science fiction things that I knew when I was a kid in the 90s, only one actually happened, and that's handheld devices with touchscreens with all the world's information accessible through them.
Many others, like humanoid robots (that can do actual stuff like independently clean a home), general AI, actual real space travel (where people live on different planets or giant space wheels), flying cars, replicators, fusion energy, self driving cars (those are near though), brain uploads, nanobots, curing many diseases, etc... didn't happen and won't any time soon, and of course some are physically impossible like FTL travel, teleportation, time travel, ...
It's at least nice to have seen one science fiction fantasy come true so far :)
As always, when this kind of things come up, I'd like to mention "Of Flying Cars and the Declining Rate of Profit" (2012), by the late David Graeber. There's a reason late 20th and early 21st century technological development went the way it did, rather than the way it looked like it would from the mid 20th century.
Many others, like humanoid robots (that can do actual stuff like independently clean a home), general AI, actual real space travel (where people live on different planets or giant space wheels), flying cars, replicators, fusion energy, self driving cars (those are near though), brain uploads, nanobots, curing many diseases, etc... didn't happen and won't any time soon, and of course some are physically impossible like FTL travel, teleportation, time travel, ...
It's at least nice to have seen one science fiction fantasy come true so far :)