If you've got a spare 45 mins, Mark Fisher was great at articulating and describing the pervasiveness of nostalgia in the 21st Century.
He builds on Jacques Derrida's idea of 'hauntology' to describe how today we are haunted by the lost utopian future of what we imagined the 21st century to be like. We escape into nostalgia as we realise that the promises of what the 21st century might be like (The Jetsons etc) were never delivered.
https://youtu.be/aCgkLICTskQ