I quite obviously don’t speak for everyone alive at the time.
I was talking about the people I grew up with. Referencing @catsidhe above, I grew near-ish to Garden island which, being at the time a submarine base, was a primary nuclear target for the Soviet Union. I lived far enough away that I wouldn’t be in the vapourisation zone, but would have been in the “probably die from cancer in the first five years” zone.
For the group I went to high school with, this knowledge had a serious impact on our psyche!