Art is an expression too, so if a simplistic piece is on display, it may (or may not) be simply a lack of appreciating a more complex stimulus. Although, abstract art also leaves a lot of space for imagination, like looking at clouds, anyone can see whatever their mind has to offer and projects externally (unconsciously). Look at Joan Miró, Wassily Kandinsky, Piet Mondrian, Jackson Pollock, Willem de Kooning, Mark Rothko, Lucio Fontana, Cy Twombly, Gerhard Richter, Georgia O’Keeffe, Agnes Martin, Hilma af Klint, Sam Gilliam... and many others that have made a spun into the art space.

Others more contemporary like Ana Dévora, Jadé Fadojutimi, Julia Crystal Kirillova, Fuen Chin, Angus Martin...

My preferred piece and a great example is the Cut of Lucio Fontana.