While I used to be the guy that would carry a book on my mass-transit commute, I found that the (admittedly minor) headaches of doing so were contributing to my reading less and less.<p>Having to carry a book around is fine if it's a small paperback, but for books I just couldn't wait for, I found that my laptop bag was cramped enough without trying to carry the hardback Game of Thrones, so I ended up prioritizing taking smaller books on the commute, which meant that I had books at home that I wasn't reading. Meanwhile, the Kindle is smaller than a paperback. Advantage: Kindle.<p>If I was nearing the end of a book, I would just stop taking it, because (for me at least), the idea that I might take a book into my commute, finish it, and not have a book to read on the way home was a hassle. Moreover, I had to carry the already-read book around for the rest of the day. With the Kindle, I could finish one book and start the next. Advantage: Kindle.<p>Bookmarking / placeholding doesn't need much discussion, but I definitely found that on the Metro, I lost my place a lot more often than reading on my porch. Advantage: Kindle.<p>Goodreads integration. I like sharing my thoughts on books, but more specifically, I like sharing my ratings of books... mostly for myself, so that when I'm looking for a new book and nothing is jumping out at me, I can check out my Goodreads review, find other books by authors I rated highly, and just grab the next book from an author I previously enjoyed. With paper books, I found that I would often forget to update my rankings, while my Kindle asks at the end of every book. Advantage: Kindle.<p>To those who suggest that paper is better on the eyes than e-ink, I can't assert scientifically either way, but as a programmer who spends too much time in front of a screen, I can only say that having begun with the Kindle software on an iPad, and eventually moved to the Kindle hardware, the Kindle is MUCH better on the eyes than the iPad. On the scale of paper to iPad, the Kindle feels like it comes closer to paper than iPad, if it's not exactly the same.<p>While I acknowledge that the above quibbles are in fact quibbles, and possibly unique only to me, on the whole, I've found that keeping my Kindle on me just means that I end up reading more, which is the far better alternative.