Lately, it is very rare that people discuss music. So recently, I moved my CD (& books) collection to living room and it has been good way to start conversations about music. Friends scan through the collection, sometimes, they borrow them. Album art is another thing that is fun to look at together. It feels a lot more social than sharing music on Facebook.
My only issue is I don't have a CD player anymore except in the car.
(Same thing with books, any book I buy on Kindle, I assume it is a rental. If I really like the book, then I get a paper copy.)