People in the 1960s liked the idea of the gi joe perhaps, but they didn't want a 1940s/1930s america again what with the great depression and widespread malnutrition. I'm also not sure if midnight in paris is considering real nostalgia that people back then had, or present day nostalgia that we assume people back then probably had. The 1920s and 1890s were probably good decades to far fewer people than later decades that we are presently nostalgic about, for example. If you were rich maybe you partied lavishly in the roaring 20s, but if you were poor maybe your memory of that decade is dominated by the spanish flu, prohibition, and the stock crash that came a few years later.