I used to believe that about the 40's and 50's because of the way I thought people dressed and acted back then. Some of it was because of t.v. shows and movies and some was because of my grandparents who came of age back then and seemed to me to be the epitome of wholesome, clean living and decency.
However, as my family and I became serious observers of classic films (1930's to early 1960's) I learned about the pre Code movies of the 20's and 30's. I also saw plenty of films during that so-called Golden Age, that were full of innuendo, scantily clad women and suggestive dialogue.
What I've learned is that plenty of people were "running around" in those days...and many of them got married because they "had to." How many were repentant? How many were faithful, practicing Christians afterward? How many managed to convey a certain hypocrisy to their children..."what will the neighbors think?" Where everything looks good on the surface, but is rotten inside.
I think the hippie kids from the 60's were responding somewhat legitmately to the lies of their parents...now how they chose to "live their truth" was the wrong way, the wrong answer, obviously...but they were responding to the starched facade of perfect living of the 50's.
My conclusion is that unfortunately, there was no perfect time to live .. and that Christians have always had to fight the good fight, to swim against the tide of immorality and licentious living.
In my opinion, fwiw.