It's pretty much like old people are romanticizing the 60s, 70s or whatever, through the rose-colored lenses of time and self-delusion.
Man, a lot of stereotyping going on about this.
Looking back fondly at the time in your life when you weren't responsible for holding down a job, for taking care of a family, for buying car or home insurance, etc., and remembering when you had the time to get totally wrapped up in your friends and to spend large chunks of your time thinking about music, grooving to music, and finding new music to love, and before the main tracks of your life were set--that all seems pretty normal, whatever one's generation.
Sure, it was never all good, and most of the adults I know would never actually go back to being 14 or 15 if magically given the chance. But it's not like remembering the good things about being between childhood and full adulthood is totally delusional either.