I remember reading about a psychologist who specialized in patients who had become partners in large law firms. They were often depressed because they had set aside 10 or more years of their lives (3 in law school, 7-10 at the law firm) making partner and figured that once they got that extremely well-paying status at the age of 35 or older, they could choose their mate from among the law partners, surgeons and other very successful men. They didn’t realize that these guys preferred the 20 year old receptionist in a miniskirt as their wife, not a 35 year old on the same plane as them. This works differently with professional women - most I have known have no interest in marrying a construction guy, skilled tradesman, or trucking co. owner which means that they will be very unlikely to find anyone. As with women of all races, there are far more black females in college and professional schools than black males, just as women overall now constitute a large majority of the incoming classes of liberal arts colleges and professional schools.
Up to the early 80’s the local law school had an annual mixer with the local nursing school. Perfect match. Nurses were the higher earners out of school and bu the time the lawyer started making money the nurse would be home with the kids.
The mixer was seen as too sexist as lawyers married lawyers. And failed abysmally.