I do not enjoy reading most biographies but I consider the information gleaned to be good. The book as a whole is worth reading but the experience of reading the book is not high on my list of good experiences. I suppose the end result of knowing more can be wrapped into the term "experience." I, however, am more thinking of "the experience" as aesthetics.

Also, if I read the same book twice I will have different experiences. Does the quality of the book change? If I read a book out loud with my significant other the experience will have much more meaning than the book provided on its own.