The Pew article What’s behind the growing gap between men and women in college completion? by Kim Parker (11/8/2021) notes:
Men are more likely than women to point to factors that have more to do with personal choice. Roughly a third (34%) of men without a bachelor’s degree say a major reason they didn’t complete college is that they just didn’t want to. Only one-in-four women say the same. Non-college-educated men are also more likely than their female counterparts to say a major reason they don’t have a four-year degree is that they didn’t need more education for the job or career they wanted (26% of men say this vs. 20% of women).
Women (44%) are more likely than men (39%) to say not being able to afford college is a major reason they don’t have a bachelor’s degree. Men and women are about equally likely to say needing to work to help support their family was a major impediment.
Also worth noting:
The reasons people give for not completing college also differ across racial and ethnic groups. Among those without a bachelor’s degree, Hispanic adults (52%) are more likely than those who are White (39%) or Black (41%) to say a major reason they didn’t graduate from a four-year college is that they couldn’t afford it.
There is information about the questions and methodology.