In my day:
"grass" was mowed,
Apparently Grandpa never watched Reefer Madness
"coke" was a cold drink,
Tell that to Sherlock Holmes or the millions of ordinary citizens who got hooked on hard drugs that were in over the counter medicines
And we were the last generation to actually believe that a lady needed a husband to have a baby.
and if she didn't, which was more common than Grandpa thinks, she got sent away or the baby was raised as a "sister"
I understand how you think the good old days were something fantabulous like Ozzie and Harriet but they had drugs, crimes, murder, inflation, depression just like they do today. Grandpa is just getting too senile to remember.
In other words, sin has been around a long time, and sometime reminiscing about the good old days is done with rose colored glasses. Grandpa may not be senile after all.
That being said, public morality that was woven into the social fabric was more traditional, conservative, Judeo-Christian than it is today. The other point is that this culture existed not so long ago. I guess if I wanted to live in cynicism, I would deny this actually existed in the past, imperfect as it may have been.
Grand dad was bright enough to understand that self-inflicted artificial stupidity was probably not a good thing.
"I understand how you think the good old days were something fantabulous like Ozzie and Harriet but they had drugs, crimes, murder, inflation, depression just like they do today. Grandpa is just getting too senile to remember."
We know that your stupidity and acceptance of evil, drugs, crimes, murder, inflation is something you won't live to regret. It's going to kill you, and you are too dim to care.
Ponder this. Charly Starkweather went on a multistate killing spree in early 1958. He Rode the Lighting in June 1959. We knew how to handle things, then. Charlie Manson staged multiple murders in 1969, and died of old age in 2017.
Never confuse senility with wisdom.

Tell that to Sherlock Holmes or the millions of ordinary citizens who got hooked on hard drugs that were in over the counter medicines
Sherlock Holmes is a fictional person.
There are millions who were addicted to laudanum, and other drugs, but Sherlock was most definitely not one of them.