I've gotta say, I've never understood the sentimental argument for paper books over ebooks. I was/am always like, what? How can paper be sentimental. Let's be real. It's the STORY that interests you, right?
That being said... I love my bookshelf. And I've found myself wanting to fill it with the books that I know my family enjoys. I think that's what the bookshelf boils down to for me. It's the books everyone's going to read and enjoy and talk about. Even if I do love my Kindle, too.