>Many subjects cannot really be learned from books. Regardless of how many history books you may read, for example, it will not shed the same insight as a profound discussion with a highly-experienced academic in the field. This is true for many aspects of the humanities.
My undergrad humanities courses were 100+ students packed into a giant lecture hall listening to a professor talk. There was essentially no interaction.
I've taken those courses also - they are still valuable. Take the same book home, or hell, take ten books home on that subject and you will still miss many salient points that only prolonged formal study of the subject will bring.
That's the trick with the humanities - they are not hard sciences, there is no canonical body of knowledge to be passed on; This isn't a straight download. Many things are a matter of perspective, of experience, and of particular schools of thoughts - all of the above poorly communicated via mere books.
That's the difference between a history book vs. a good history professor. Even without the (invaluable) ability to interact directly, it's the difference between a dry recounting of facts vs. more profound linkages into other areas of the field, or entirely other fields of study altogether. Sure, by reading books you will make some of these connections yourself, but it's hardly as good as what you'd get in classes.
That being said, there are certainly bad profs who do just do the dry recounting of facts, in which case you are basically better off reading the textbook at home. The presence of these should in no way discount the enormous positive influence of college educations done right.
It's not, but you have to go to the lecture to get the transcript, right? The professor may be saying things that don't appear in any book. This is especially so if you're going to a good school and the professor is a leading researcher in his field.
My undergrad humanities courses were 100+ students packed into a giant lecture hall listening to a professor talk. There was essentially no interaction.