Not all but most of these programs are minors not majors. Also there are some that are degrees at a Master's level. I think you would be surprised at how many jobs this type of education dovetails into. There are a lot of jobs in fields like social welfare, public relations, law, and counselling that this type education could be an important adjunct to other education and experience.
I am well aware that some of these fields have Master course, but it doesn't make the degree any more useful. These are courses people take one when someone really doesn't know what they want to do, or what to study. Which means that these are course which really shouldn't be taught at a university. These are courses someone can study on their own free time.
Women's studies is usually a minor or major in a liberal arts education. As in most liberal arts programs you need a Master's degree. The fields of graduate study that Women's Studies majors have normally pursued include: Administration, advocacy, anthropology, arts, counseling, education, history, humanities, international studies, law, library science, philosophy, psychology, public health, public policy, social work, and sociology.
I know you may not understand this but some people attend college not just to latch onto a job but they want to get an education that can help them throughout there life. A liberal arts education which can include women's studies or African American studies as well as, sociology, history, literature, foreign languages, etc.. can be an education the prepares a student not just for their first job or so but for their entire career. 20% of our presidents have had liberal arts degrees as well as 12 CEOs of America's largest corporations. 69 percent of business leaders rate liberal art's degrees as very important.