You used anyway yourself...
I don't mind the work or the boredom, if that's what you call it, but you can pick apart the whole book, write 10 essays on it, learn all the literary techniques, and even "understand it", but without experiencing it all these are useless. The person who is able to experience it knows more about the books than the lit. majors.
It's almost impossible to explain to people who do like to "analyze" books. As in Salinger's later novels- he dedicated those books to the reader who reads and runs. I cannot speak for other writers but I myself would not want one of my written works to be read like that. I am probably not interested in reading writers who want their books to be analyzed.
I am not saying it applies to poems, as I was thinking more of short stories and novels when I wrote my post. I am not terribly interested in poetry and have not read much of it- so I can't comment on that.
And in university you can dodge those classes.
I suppose the one positive to come out of teaching literature in public school is that you force them to read and might spark their interest in literature. (Though from my past experience I know that most of the students end up reading cliffnotes/sparknotes)
These classes are no different than others- most students only care about their grades- college they get into- job.
And the ones that end up as majors- well we don't need any more critics and scholars.