I prefer it. First I have my library with me at all times. I'm pretty busy and never know when I'm going to get a chance to do some reading, so when the chance

I prefer it. First I have my library with me at all times. I'm pretty busy and never know when I'm going to get a chance to do some reading, so when the chance comes I know I will have my book with me. Also I like keeping several pdfs open simultaneously when at my machine so I can cross reference. Even when I'm on the bus. Searching. Copying code straight into editor. Cheaper. Less trees. Less storage requirements.