I thought by now we'd live in space
And eat a pill instead of dinner
And wear a gas mask on our face
A president of female gender …
— "(It's the Eighties, So Where's Our) Rocket Packs" by Terry Taylor
OK, so no rocket packs, but we do have picture phones.
Many of the longed-for/expected sci-fi developments of the future haven't come about, but other glorious advances have helped to make our 21st-century future an enjoyable place to live. Consider, for example, the routine use of direct deposit.
Seeking nominations below for both categories.