The world in the 1950s looked somewhat paradoxical from the point of view of American society. It was a time of great progress and prosperity, but it also seemed a bit fragile.
The world was really going America's way in this time. The US was by far the richest nation in the world. The quality of life for the average American was higher than ever before. Things were good for the first time since 1929.
At the same time, it was a bit scary. There was the communist threat seeming to spread over the world. Many believed it was even spreading into the US, which is why McCarthyism had such a strong hold on people's minds. There were even worries about teenagers and juvenile delinquency.
Overall, then, things were really good for Americans, but they had these worries about problems that might ruin those good times.