Totally. The right way to approach an art gallery is definitely just to walk round until something hits you.
Most astonishing time that happened to me was a wall-sized Rothko that just floored me, in a way I never would have expected a slab of color to.
Dali’s La Gare de Perpignan stopped me in my tracks too.
Rarely been as stunned by more famous works as when I got blindsided by something that leapt out and said ‘look’.
^^ this. I was never an art person and then one day I felt like I was just punched in the face when it hit me. It's not like "I like this, it's interesting", it's like "Oh. That."