When fuzzybuddy started this thread with "We've all heard people ramble on about how good the "Old Days" were", my thought (possibly incorrect) was that most older folks would be thinking about their own earlier years, not the last half of the 19th century.
Every decade since, lets say, the 1930s has had it's own distinct triumphs and tragedies ... the great depression, the polio epidemic, WWII, the Korean and Viet Nam wars, but also life saving advances in medicine like penicillin and the Salk vaccine, the booming post war economy of the 50s, the excitement of space exploration, the rise of electronic technologies. Each of these was, of itself, simply an event and such things will continue to happen again and again. Economies will fluctuate, wars will be fought, epidemics will still occur, and technologies will continue to evolve.
When I think fondly of the "good" old days in a broad sense, I think in terms of changes to society and, from my own narrow perspective, the 1960s were a turning point. The 60s saw the beginning of the meteoric rise of the professional iconoclast and the professional demagogue - an unholy pair if there ever was one. The iconoclast shouted "What you always thought was good and decent is not true and never was!". The demagogue expertly stirred the pot, convincing people that they were somehow lacking things, that they were being treated unfairly, that they were "entitled" to something more. This, to me, was the start of "professional social engineering". Of course, iconoclasts and demagogues have always been with us, but facilitated by virtually uncontrolled growth of the television and movie industries and enticed by the enormous wealth that could be had, the erosion of our social fabric exploded.
Among the direct results were the widespread abdication of personal responsibility, the rise of the "Me! Me!" culture, the breakdown of the family, a skyrocketing divorce rate, a huge increase in the number single parent families, the virtual extinction of the stay-at-home mother, the phenomenal rise of the drug culture, the death spiral of sexual morality, and the unprecedented explosion of government bureaucracies, to name just a few.
Sunny wrote "Some day, our grandchildren, when they reach 90, will probably be talking about the "good old days," meaning right now." Sadly, I suspect she's probably right.
Sorry for the long post.