Well, to begin, I am 26yrs. old, and am a consumer of books (a devourer more likely!). I must say that my most prominent impression about books is their incomparable power to build the human mind and spirit. Books are the greatest of all possible tools for educating and for edifying the mind! I can conceive of no other medium which can perform these duties as capably.
However, due to this capacity for good, there exists likewise a capacity for evil, so that specious or immoral books have the potential of creating the greatest harm in the human mind. Therefore I believe books are to be treated with the greatest of respect and discernment, for they can either build one immensely or destroy one irreparably.
I hope this is close to what you're looking for? If not, and if my thoughts are out of place, then please accept my sincerest apologies! Thank-you!