Does my taste in art (or lack of) make me a pleb?

I don’t get it. I’ll never get it. How does this deserve to be in a museum? Or this?

If I can’t differentiate a piece of art from what my 6 year old niece paints, what makes it art?

Is it exposure? Education? Genetics? Nature? Nurture? Why are some people deeply moved by such pieces and I just find them baffling and uninteresting?