I rather disagree.
In the first place, “the sexual revolution” here seems to indicate the 1960s [and most of what we call the 60s was realy the early 70s)
In fact, the 1920s/30s were roughly on a par with the 60s (but with a different philosophical outlook, and without enabling technologies like the pill and IUD). It’s hard to characterize the 1940’s because of WWII and the post-war chaos, but a DoD study declassified in the 70s indicated that almost 85% of “our boys overseas” had sex overseas. (I regret that I cannot provide a web link for this statistic. I’ve been looking, since I find it a useful stat)
The 1950s weren’t the “classic traditional values”, they were a period of constraint and neopuritanism, both socially and politically (e.g. McCarthyism). Further, the US in the 1950s/60s was not a monolithic culture. Reading many commentaries on that era, one might come to believe that the majority of the US was tract housing suburbs. In fact, such suburbs, despite their ubiquity in the media, didn’t even exist prior to 1947, and ‘tract’ (subdivision) houses built remained a small fraction of American housing until later. [That isn’t to say that suburbs didn’t exist before WWII, but they were more along the periurban Brooklyn Heights model than the Levittown model.]
It was only roughly around WWII ( +/- 5 years. Population shifts during the Depression and the war make it hard to assign an exact date) that the majority of the US population ceased to be rural, yet contemporary writings about the mores of the rural population from 1920-60 stand at stark odds to the writings of those who lived in that time and place. Meanwhile, in urban settings, proximity and lack of privacy bred prudery. New York papers were scandalized that men on Long Island went shirtless in a 1930 heatwave!
Social class and category also played an important role. The attitudes of the American upper middle and upper classes tended to be much more Victorian than the over whelming majority of the country. (Today we read the prudish “guides” and lawsuits of that era, and believe that they reflect the mores of the time, but they were actually attempts to stem the tide. The American Nudist, for example, was carried on most newstands in 1930, without comment, much less the concealment and restrictions used for Playboy in the 1950’s/60s/70s, even as court cases that seem prudish to us were working their way through the Federal courts.
To return to the OP, families with children naturally share interests with other families with children. They tended to live in the same areas and socialize with each other. Today’s adults who were children in the 40s or 50s might have a skewed view of the society as a whole: their experience would naturally be heavily weighted. We also had rosy-tinted views of what live was like even at the time: in 1945, “the years the boys came home”, there were 1,612,992 marriages and 485,000 divorces (1 divorce per 3.3 marriages). after a few years, marriages were up slightly (1,667,231) and divorces down (385,144) for a ratio of 1:4.3 - admittedly the ratios are twice as high today, but the common conception that divorce was rare and scandalous is clearly incorrect. It simply appeared that way to the children or young married childbearing families of the time, due to social segregation. When I was growing up in the 70s, social segregation was a visible process: divorced families often sold their home (no longer able to support both a mortgage and a second household) and each parent moved to less expensive housing.
If you look at the US Census statistics, you’ll see that a large percentage of couples were childless. They were so common in the daily experience of most people that the media was full of them, and no one ever thought twice. Keep in mind that in 1930-1980, hysterectomy was second only to tonsillectomy as the commonest surgery, and a very sizeable fraction of couples aren’t fertile (individually or with each other) to begin with. Beyond that, many couples who didn’t have children by choice, were not very sexually active, or were infertile secondary to delays in treating “VD” (as we called STDs back then)