This was my impression of undergraduate university: cognitive dissonance. Why? a) why do we have this ridiculously inefficient model of pedagogy, and b) why are all these people here who don't express/display any real interest in their subject.

You have been through primary and secondary school, where the function is pretty clear: you are children, so you need to be somewhere supervised by adults; you need to learn to socialise with other children; and you need to learn basic skills like arithmetic, reading, composing essays, studying, punctuality. Then you go off to university which doesn't seem to make any sense. I think it depends on your course - it will be much better if you already have a strong, realistic idea of what you want your career to be, and find yourself among like-minded students.