My grandfather rode to school on a horse, saw the last of the nomadic native peoples traveling Iowa, watched polio ruin lives and bring fear, then watched science conquer polio. Watched humans conquer the sky and land on the moon, fought mechanised island warfare as a sent in Marine in the pacific on the side of half the world fighting against the other half of the world. Personally saw the damage of nuclear war in occupied Japan, then watched the world build a 15 minute system for mutually assured nuclear destruction (MAD). Went from mail to shared rural 'party' phone lines, and ended his life with a world connected with a global knowledge network to every home and free video calls to anywhere in the world. He went from canned zucchini/beats in the winter to access to whatever fresh produce (and more importantly ice cream) he wanted all year long.

Unless we make some major breakthroughs, I don't think there will ever be another generation of change like that one.