I can't recommend this book enough on the topic. TLDR Women are more picky then Men in the courtship marketplace, and finding a partner with matching values is most important to growing and staying together. People expect a fairy tale, when they're signing up for a job (relationships require work and effort).
A quote from the author 10 years post publishing: “I think the book is really, ironically, about having higher standards about the things that matter, like the character qualities, generosity, kindness, reliability, and not getting so hung up on things like, you know, whether you’re going to go on a second date with a guy because of how he dressed.”
https://smile.amazon.com/Marry-Him-Case-Settling-Enough/dp/0... (Marry Him: The Case for Settling for Mr. Good Enough)
https://openlibrary.org/books/OL23687614M/Marry_him
The Atlantic piece that was the genesis for the book: https://www.theatlantic.com/magazine/archive/2008/03/marry-h...
https://jezebel.com/lori-gottliebs-marry-him-was-always-a-ca...
EDIT: @300bps (HN throttling, can't reply directly) Indeed. The book covers exactly this (census data for the dating marketplace and the dynamic between genders as age brackets tick upwards). The market is great for women 21-30, and it rapidly declines after 35. You can borrow the book from the Internet Archive with the library link I tossed in this comment for more context.