Concepts of Ages

I’m beginning to write a story which involves a grandmother telling her granddaughter a story. A real conceptual change occurs to me that I hadn’t realized before.
Grandma and Grandpa are no longer the people who lived through the Great Depression or the World War II decades. Grandma and Grandpa are now the ones who protested for equal rights among the races and genders, went to Woodstock and fought in Vietnam. Drive-ins and disco are now what grandparents know.
What’s even stranger is that in only a few years (if not already) Grandma and Grandpa will be the ones who played arcade games and listened to cassettes. Individually, these concepts of age shifts have happened to many people. It’s only now that the children of the late 60s, 70s and 80s are in their 30s and 40s. Mainstream society is accepting the shift in age concepts. Even the people who aren’t parents can’t deny the generational shifts.
That’s a lot to think about. To us “grandparents” listened to the radio and worked to support the war effort. To our kids, “grandparents” watched the original airing of Howdy Doody, Star Trek and Batman as well as living through the Red Scare, Nuclear threats and the space program.
On the one hand, the shifting thoughts of the generations are disturbing because it means that we’re progressing through the ages of society. In another sense, it’s rather fascinating to see the age thought shift in action. It’s a gradual change. But I feel like I’m just now really beginning to understand the age shift as a mainstream thing.
Creepers, I’m getting old. Oh well. HEY YOU KIDS, GET OFF MY LAWN BEFORE I BLAST SOME R.E.M. DOWN YOUR EARLOBES!