A childhood belief about history

When I was a little kid in the early 90s, I really liked the albums from the 60s my family had and I read all about the hippies and stuff. I figured, in my innocent little mind, that the 60s was when cool was invented, and if you became a hippie in the 60s, you never had grow up, and you stayed cool by evolving with the decades. So that meant that the people who were hippies in the 60s/early70s were also the same people at the disco in the late 70s, then the punks/new wavers/whater was cool in the 80s, and now (meaning 1993) they were the skateboarders or grunge rockers or something. This also explains why I did not beleive my parents saying they were involved in anythin g in the 60s since they were old and never did anything fun.