Maybe you're just looking at the wrong things. I see the glass as at least half full. Some people told us in the 1960s there'd be Moon colonies in the 21st century, but a lot of people were telling us that the world would be a Malthusian nightmare, or a nuclear wasteland.

Since 1970 the population of the world has gone from something under 4 billion to almost 7 billion. And yet the percentage of that population that is malnourished has gone from 37 percent down to about 17 percent. That's still a lot of people (remember, it's a percentage) but it's not going down the Malthusian vector. And how soon we forget how the nuclear sword of Damocles had been part of our everyday paradigm. Now the Soviet Union is gone, and without a shot fired (technically).

We didn't end up under a world tyranny, despite some people's best efforts.

Medical technology continues to improve.

We don't have colonies even in Antarctica. Mostly because nobody's allowed to make money there. We'll have colonies on Mars when someone can make money doing it, same motivation as almost every colonization and exploration effort in human history.

Girls look pretty damn good in this future. Just my opinion.

Supersonic airliners were regulated out of existence. To be fair, the market and tech weren't really ready for it yet. At some point suborbital transport might fill that niche a lot better.

"Jim Crow" hung people from trees. You can avoid Rush Limbaugh by turning off the radio.

There aren't any flying cars yet, but considering what people feared back in the day, I think things turned out pretty good.