Don't have time for art? You must not have time for life, then.
I like this idea of frames for books to display on walls as art.
I used to do a similar thing when I was in high school, only the art I displayed was album covers. I still can't find a photographic example of what I did with the covers of my three copies of Pink Floyd's “The Dark Side of the Moon.” I kept buying used copies so I could do precisely what I did. The inner and outer gatefolds all connected to one another, so it became a Mobius of refracted light.
This delighted me. Of course, I was a teen, and it was the 1970s. I didn't have a lot else.
My friends looked forward to coming into my room, because they never knew what would be on display. For a while, all my Beatles albums surrounded my room. If you don't think the “Rubber Soul” or “Sgt. Pepper” covers are high art, we're going to have to agree to disagree.
And my friends and I loved to discuss the covers of Yes albums and what they might have meant. (We continued to discuss it when “Avatar” came out. We assumed James Cameron had lifted much of the geography of his world from Yes/Roger Dean album covers. Roger Dean thought so, too. He sued and lost.)
If album covers can be art, and they certainly are, so can book covers. I'd display some books myself, but my wall space is all taken up with other stuff. Like albums.