'the Future'! what science fiction writers totally missed.

I grew up reading the science fiction written during the period of time that has come to be referred to as 'The Golden Age of Science Fiction'. Coming of age in the 1960s I was blessed to have the perfect Cultural backdrop to complement the stories that consumed my attention from ages 6 to 16 ( a bit of a 'late-bloomer', psycho-sexually speaking, aka a nerd). Looking back now, I did not feel that I was deprived, I had my books telling me stories of a future without limits, a future where the solution to any problem was inspiration, technology and a hero with a sense of humor. Though I was not aware of it at the time, the culture I lived in was being totally beguiled by the promise of a bright and clean future, courtesy of that peculiarly American belief in the lone genius inventor and (a) mighty industrial infrastructure.
In any event, I had the Big Three (and a lot of other favorite SF writers), the big 3 being:

1. Asimov
2. Clarke
3. Heinlein

the other favorites:

• Bester
• Sheckley
• Dickson
• Aldiss
• Pohl
• Bloch
• Niven
• Anderson

Too many others to mention (except for one...), in any event, to the question, 'What did they all miss about the Future'?

The role of computers and the new forms of communication that (this) technology engendered. Many writers referred to computers, and other artificial intelligence in their depiction of the future and otherwise employed the concept the computer in their stories, but none (among the Golden Age authors) envisioned the ubiquity of the small, portable personal use-as-an-appliance type computer.
Asimov did, however, write a short, short story that was a curious reversal of the development of personal computing, 'The Feeling of Power' Nations engaged in war using guided missiles that are hindered by the increasing size and complexity of the computers that must be built into them, someone 're-discovers' that a man can do the math (necessary to plot the missiles course) thereby increasing the efficiency of the weapons.

If we all agree that the ubiquitous personal computer is the biggest 'miss' by the science fiction writers of the Golden Age, the next questions surely must be, 'where were they the most accurate (in their predictions)'?
I will dodge this question and propose to answer a slightly modified question in the same vein. Which writer and/or novel, from the 1950s and 1960s came closest to describing the 'future' that has actually come to pass?

John Brunner 'Stand on Zanzibar' This book, written in 1968 is so prophetic, so accurate that it is scary. What makes his vision of the future so spot on is the social implications of the applications of increasingly advanced technology. You need to keep trying to remember what the world was like in 1968 as you read this book. I could list all of the details about life in the 21st Century that Brunner anticipated, but the list would comprise an additional hub. Suffice to say that what I am most impressed by is how he got the change in day to day life in a large city, from civic accommodations to an intractable problem of homelessness to the idea that corporations attempting to re-write a sovereign nations Constitution to it's own benefit.

In any event, the heck with HG Wells or Jules Verne or any of those other guys, go and read 'Stand on Zanzibar'.