I definitely approve of keeping the poetry books.

I have always had way way too many books, always moving boxes and boxes of them with me whenever I changed houses (even to Japan!). But in the past year I've made an effort to get rid of most of them and rely on my Kindle more. The only books I am keeping are research material that is impossible to get in ebook form (old haiku, Japanese, or Zen books) or some of my favorites that I just can't resist having a nice edition of (like Dune or — as I see in your box — Treasure Island).