"Participants described being more emotionally attached to physical books, and said they use physical books to establish a sense of self and belonging. Participants across age groups frequently spoke about their nostalgia for certain childhood books. They also talked about experiencing physical books through multiple senses — describing, for example, the sound, smell and tactile experience of opening a new book, and the ability to highlight or write notes on paper pages. Participants also said they use their physical book collections to express their identity to others who might be perusing their shelves. E-books did not have these associations."
University of Arizona