The archetypal experience of culture in the 1960s is very different than in 2020, few things have remained the same. — Judaka 
Your position on 1960 vs. 2020 is just plain wrong, because:
You are missing the fact of cultural continuity.
The 'current' economy driving western civilization (be that French, Australian, or Finn) has been in force for 
at least the last 150 years--and longer.  products change, corporate names are refreshed, companies merge, new factories are built for new technologies (transistors instead of tubes, then integrated circuits etched onto silicon, then...), management changes, consumer preferences change.  Land barges with fins, then without fins; smaller cars vs. big cars; back to big cars; gas powered cars to electric cars.
Saks 5th Avenue was founded in 1860.  It's still in business, but it is owned by the Hudsons Bay Company, which was founded in 1670.  My favorite beer is Stella Artois, a Belgian pilsener; the brewery was founded in 1366.  There are quite a few companies that have been in business for hundreds of years.
The language has not changed.  New formal words and new slang has been added; other words have been dropped.  Grammar remains the same. Pronunciation of words (accents) are by their nature always changing, but the meaning--however the word is spoken--changes very slowly, 999 times out of 1000.  One might take a walk around the block; in 1960 the word was pronounced the way it is spelled. In some areas (like Detroit) the pronunciation is changing to something closer to 'bleck'.
While specieshood poses limits on what we can do (literally), social styles and moral norms change fairly rapidly, but not drastically.  You might be less likely to be hanged for murder in 2020 than in 1960, but murder is about as frowned on now as then.  Ditto for a lot of other crimes.  The use of recreational drugs waxes and wanes over time, and for the most part you could get as high in 1960 as in 2020.  Birth control which became widely available in the 1960s changed the sexual equation (to some extent), and that change is still in effect.
Life has changed more for women than heterosexual men; that is a significant change.  Life for gay men has changed a great deal.  Sex, however, has not changed; there are no new ways.  What works in 2020 will work in 1960.
Changes come and go.  Some people had groceries delivered to their homes in 1960.  Later that became much less common; then it became more common again.  Amazon may seem revolutionary, but in 1960 there were mail order catalogues from Sears, Wards, Spiegel. et al, selling a huge array of goods.  At one time Sears even sold pre-fabricated houses; not mini-houses, full sized ones.
Maybe you spend too much time among your own age group.  Get out more.
If you like to read, try something from the late 18th century--Boswell, for example.  He was a lawyer, man about town, friend of Samuel Johnson.  Better yet, try Samuel Pepys, 1633 1703.  He was another man on the make, man about town.  He kept a diary (in cypher) which now makes great reading.  His daily comings and goings 300 years ago aren't all that much different than what a similar socially/sexually active guy might be doing now.
Here's a joke from 1960.  It's a long, formulaic joke, but I am confident you will be able to understand all the words in it, and might even get the joke; you might even smile slightly.
                     
                     A fisherman’s joke
The day after his wife disappeared in a kayaking accident, a Claddaghduff, an Irish man answered his door to find a grim-faced Constable & one waiting in the front yard. "We're sorry, Mr. O’ Flynn, but we have some information about your dear wife, Maureen" said one of the officers.
"Tell me! Did you find her?" Michael Patrick O’Flynn asked. The constables looked at each other and one said, "We have some bad news, some good news, and some really great news. Which would you like to hear first?
"Fearing the worst, Mr. O’ Flynn said, "Give me the bad news first." The constable said, "I'm sorry to tell you, sir, but early this morning we found your poor wife's body in the bay." "Lord sufferin' Jesus and Holy Mother of God!" exclaimed O’ Flynn. Swallowing hard, he asked,
"What could possibly be the good news?" The constable continued, "When we pulled the late, departed poor Maureen up, she had 12 of the best-looking Atlantic lobsters that you have ever seen clinging to her. Haven't seen lobsters like that since the 1960's, and we feel you are entitled to a share in the catch."
Stunned, Mr. O’ Flynn demanded, "Glory be to God, if that's the good news, then what's the really great news?
The constable replied, "We're gonna pull her up again tomorrow."