Those things mostly arose in the 1950s (except for contraception) but the main factor was that was an era where very strictly divided gender roles were being heavily pushed. To the point where women who weren't satisfied being only wives and mothers were considered to be disordered and even insane. I just recently wrote about this, so I've also just recently researched it.
“By the mid-1950s nearly 60 percent of the population had “middle-class” income levels, compared with only 31 percent in the “prosperous twenties.” By 1960 nearly two-thirds of all American families owned their own homes, 87 percent had televisions, and 75 percent owned cars.” (p. 231)
For the first time in history, the family was envisioned as being made up of a “breadwinner” man, his “homemaker” wife, and their children — the nuclear family. Grandparents and aunts and uncles now lived somewhere else, and working married women were either pitied or looked down upon. Child labor, once a common way for a family to supplement its income, was now illegal.
“Any departure from this model — whether it was late marriage, nonmarriage, divorce, single motherhood, or even delayed childbearing — was considered deviant. Everywhere psychiatrists agreed and the mass media affirmed that if a woman did not find her ultimate fulfillment in homemaking, it was a sign of serious psychological problems.
In Canada, says historian Doug Owram, “every magazine, every marriage manual, every advertisement . . . assumed the family was based on the . . . male wage-earner and the child-rearing, home-managing housewife.” In the United States, marriage was seen as the only culturally acceptable route to adulthood and independence.” (pp. 229–230).
And as I noted before, not all men were thrilled with these highly genderized expectations either. Hence, the rise and immediately popularity of Playboy magazine which advocated for ditching the "societal obligations" of being a man in favor of pursing the pleasures. That sort of hedonism was in direct rebuttal to the obligations and responsibilities inherent in the norms of the time.
Marriage boomed, and at a younger age in the 50s, but in the decades to come, a third of those marriages that took place in the 1950s ended in divorce.
