I detest the implication by "art experts" that there is some aesthetic dimension to reality that I am not privy to and that my life is poorer for it. I believe a formal art education lends as much credence to the objective quantifiability of what constitutes "real" art as a formal education in the Bible lends credence to the objective truth of Christianity. I can only imagine that a formal art education could only possibly help me understand why I like the art I like but I could never be fascinated by most "fine art" (unless it involved robots fighting each other). I can tell a good science fiction painting from a bad one even if I'm not partial to the subject matter and I can probably tell a good Rembrandt from a bad Rembrandt but I'm sure I would consider the two sci-fi paintings better than any Rembrandt. I don't see any reason that this nebulous, mystical thing called "fine art" should be placed on a different unassailable plane compared to any other form of paint-based human expression. I like some and I don't like others but I'm too ignorant and pedestrian to know how ignorant and pedestrian I am.
Taste in art (music, film, theater, etc.) is almost totally subjective.
The sum total of past influences, events, people, neurological impulses and responses, chemical and hormonal production, and the memories of all the aforementioned conspire to make up your personality -- and your aesthetic tastes.
From that perspective, an education in art can greatly expand your appreciation of it. Understanding where certain schools of art come from -- the ideologies behind them and their roots in history -- can help you to appreciate the imagery of a finished piece.
So can understanding the elements of art such as line, shape, form, space, texture, value and color. Learning what makes art art (or craft, craft) can help you analyze and dissect what you think works, or doesn't work, about a certain piece -- irrespective of its style or school.
So, it's not that you're too "ignorant and pedestrian" to appreciate, for example, Pollock or Kandinsky (I say this without knowing if you like either of these artist's works). It
may be be that because you (or anyone) haven't been exposed to and/or educated about a particular school of art that you cannot see the value of it. A bunch of paint splattered on a canvas may seem valueless to a viewer who does not understand the historical origins of abstract expressionism, or who doesn't know enough about the elements of art to discern whether there is any craftsmanship to be admired or valued in the piece.
All that said, if education in art (its history and elements) somehow led everyone who studies it to appreciate/value the same things, no one in the art world would have a dissenting opinion. But art criticism is rife with conflict and dissent. Art education can help to refine the senses and build the vocabulary necessary to discuss and analyze what makes a piece "good" or "bad", but at the end of the day taste is still almost totally subjective.