I do think post-war Scifi was optimistic as it reflected the general sentiment of the times, with increasing prosperity, scientific and social progress, and tan

I do think post-war Scifi was optimistic as it reflected the general sentiment of the times, with increasing prosperity, scientific and social progress, and tangible examples of the ability to unite for a common cause and accomplish megaprojects in general. Environmental issues were beyond the horizon, and today's societal divisiveness even further out. Civilization succumbing to technological addiction and stagnating scientific progress were considered as disappointing and unlikely timelines.