Prince Andrei (in War and Peace), who is falling in love with Natasha, is talking with her sister Vera:
“Yes, that is true, Prince. In our days,” continued Vera–mentioning “our days” as people of limited intelligence are fond of doing, imagining that they have discovered and appraised the peculiarities of “our days” and that human characteristics change with the times–“in our days a girl has so much freedom that the pleasure of being courted often stifles real feeling in her.” (emphasis added)
Bingo, Leo Tolstoy! I have often observed people writing or speaking about “these days” but equally or more often about “this country” or “this society” as if they had conducted a vast comparative study. Frequently you will hear people talking about some unfortunate characteristic that is pretty much universal across space and time and attributing it the “modern American society” or simply “our society.” Few of these, I’m pretty sure, have either spent a lot of time in other societies or made a serious study thereof, nor have many of them conducted extensive historical research about other eras.
I’ll give the floor to Gilbert and Sullivan, whose Lord High Executioner was looking forward to doing away with:
The idiot who praises, with enthusiastic tone
All centuries but this, and every country but his own