The liberal arts are called such because they are liberating. They are freeing and empowering. They teach you how to get things done.
As a homeschooling parent, I gave my sons a humanities education defined thusly:
An education in the art of dealing with the inconvenient, inescapable fact of your own humanity and that of the people you are surrounded by.
Language, poetry, expressing yourself, dealing with your feelings and that of other people, knowing the wisdom contained in classical stories, having some background information on the foundations of the society you live in. These are some of the pieces and purpose of a humanities education aka liberal arts.
If you don't really understand what the humanities are about, reading up on The Clemente Course in Humanities is eye opening. They set out to teach humanities to poor people and found that it allowed many of them to escape poverty.
Here is their website, though I read a book about the origin story years ago: