As a (lapsed) English teacher, I must point out that critically examining how others communicate is essential to improving one's own ability.
(Mind you, your teachers might not have approached your classes in that way, and high-end literary criticism tends towards performative nonsense°, so I can understand and sympathize if they were a waste of time, but they didn't have to be.)
°It's exactly analogous to Brain Fuck: huge fun if you have the background, intellectual ability, and are in on the joke. Both are mostly pursued for the opportunities they provide to show off How Smart™ you are.
(Mind you, your teachers might not have approached your classes in that way, and high-end literary criticism tends towards performative nonsense°, so I can understand and sympathize if they were a waste of time, but they didn't have to be.)
°It's exactly analogous to Brain Fuck: huge fun if you have the background, intellectual ability, and are in on the joke. Both are mostly pursued for the opportunities they provide to show off How Smart™ you are.