Yes you might have something there! I was just starting my final year at University. The rest of the 80s were pretty good for me on the whole. Starting my career, meeting and marrying DH, plenty of disposable income, fun and adventure to be had with no parental responsibility yet.
I can see where the OP is coming from though. I sometimes see TV from then and it feels more optimistic and light hearted somehow.
But, yeah, you are right we do have rose tinted spectacles for our youth.
I am the youngest child in our family by several years, my older two DSis having been born quite close together. As a child I remember hearing my Mum being nostalgic about the time when my two DSis were small, for example, "Oh Christmases were better then, they have spoilt it now".
I would sometimes feel quite hurt by this, though I never said. It was as though my childhood was second best and not as enjoyable to her as when my sisters were small. I guess though it was just she was younger then, still in her 20s,and probably had more energy and everything about parenthood was still a novelty. By the time I came along they had been there, done that and were starting to venture in to bringing up teenagers