Reordering books on shelves

Reordering books on shelves after their relocation to the basement. Language, theology, running, fly fishing, poetry (oh, did I just say poetry twice in a row?), academic lit, horror, fantasy, history, science fiction, biz and web dev … o the decades, the friends who they make me recall, the tactile pleasure of the weight and binding, and did I really read all these, and move all these from house to house, and what will it mean when the last second half of my life’s books are mostly read via the Kindle app?