I finally got around to purging the books I don't want and getting rid of them yesterday. After sitting around in 5 large bags for the past couple of weeks, I managed to offload about a third of them at a local secondhand bookstore and the rest went to Goodwill. Purged. Gone from my life. And now in their place I have $35 worth of store credit to get myself a couple of books at the store. (It's a good secondhand bookstore, always full of interesting stuff.)
Next, the great wardrobe purge.