Yeah I usually have a few books I'm reading at any given time, but I do usually finish them (with the exceptions of Atlas Shrugged, War & Peace, and Anna Karenina). I have a book club so I kind of have to read the book for that, and then I'll pick up whatever else I'm reading in between. But then, for example, Infinite Jest is a huge book and doesn't travel well for me because I take the subway and ride my bike everywhere, so I'll pick up a physically smaller book to read on the train and before I know it I'm reading 3 or 4 books at a time.