Might I suggest a third reason: Maintaining your sanity.<p>Not just in terms of remembering that there are other people out there struggling alongside you in the entrepreneurship game, but also in giving you a modicum of control over your next steps. While I don't believe success is completely up to luck, a lot of the when and how is completely out of your hands. Reading on startups often gives me concrete, actionable advice. This ties into Ev's first point but it's not just the ideas, it's the feeling that I have a key, non-random role to play every step of the way. If you're the type of person who needs the world to be a certain way to be happy, knowing that you have a chance to make it that way keeps you on the right side of crazy.