The house my husband wants to build has a game-room-type open room upstairs. I've talked him into installing floor-to-ceiling bookshelves all around it.
That might - just might - hold all my hardbacks, except (of course) the cookbooks, which need to be downstairs in the kitchen. So I'm trying to talk him into building some sort of bookshelf in the kitchen, or perhaps a shelf near the ceiling.
We looked at a house like that when we moved here. As soon as we got to the top of the stairs, both of us said, "Bookshelves!" But we decided the house was too expensive, leaving us with inadequate book space. We've added two small cases since we moved here, and overflow storage in the top of a closet.
When I see kitchens in decorating/remodeling magazines, I just laugh at the "bookshelf" which usually holds five or ten cookbooks. I had lower cabinets built in in the kitchen which hold about 200, and I keep the ones not as frequently used on shelves in another part of the house.