I think both the 1960s and 1920s were full of fashion, feminism, fun and hope for a better future. After the First World War it was all systems go for technology, health, fashion, architecture and liberal thinking.
Then WHAM! another war.
I believe this really held progress back for the human race as cleaning up all the destruction, deprivation, and suffering has taken a long time.
I get a warm glow thinking back to the 1960s being born in a big family then it was noisy, colourful, eventful, and peaceful for me, happy at school and I sort of knew where I stood in life ‘til about 1979 when it all fell apart for a bit - good now though and lucky ? in many ways.