I'm going to hazard a guess that this photo isn't from someone living in California! But then I'm someone (in CA) who's always worried that we'll have an earthquake and a bookshelf will tip over onto the bed. (I don't keep anything heavy in the top shelves just in case!)
Meanwhile I can't say how many furniture type objects in my apartment - originally meant for sitting on - are now temporary homes for stacks of books. I'd love to say that's because I'm packing, but stacks of books do end up snuggling themselves into various chairs all year round.