Don't blame this on the feminists.
Back in the 50s labor saving devices meant that men could have hot meals, clean clothes, and a neat place without needing a wife. In fact if you look at 50s and early 60s books, movies, and tv, the stay at home bourgeous wife was often depicted as a materialistic castrating parasite who spent her husband's paycheck on status symbols and did nothing but watch soaps, gossip on the phone, and do her nails. The labor of a stay at home wife was unnecessary so she wasn't worth her keep. More and more men preferred to avoid marriage, creating a new class of single urban "swingers". "Playboy", Thunderbirds, pony cars, and the whole double martini Rat Pack lifestyle were created for this new market full of disposable income.
When the sexual revolution and no fault divorce hit, men were free, free to dump their deadweight Bettys and Janets and go chasing after Julies and Jennifers. Feminism didn't kill the 50s marriage. Men killed it because it no longer served their interests to be a woman's lifetime meal ticket, particularly a woman they no longer wanted. Feminism was the logical response. The media at the time was full of horror stories about Bettys and Janets who after divorce and community property split were now expected to support themselves at age 50 without any marketable job skills. Younger women saw this and determined never to have their socioeconomic survival dependent on any man's hormones. The only way to always have marketable job skills is to never stop working.
Good points.
What you talk about here is a phenomena of about 20-25% of the population back then, and about 35% of the population today. Thats the actual figures for people who have actually divorced at least once or never married.