To be fair, Evernote themselves do quite a good job at promoting themselves around this idea. Personally, I don't think it's unreasonable for users to at least attempt to do this. From Evernote.com: "Your life’s work - For everything you’ll do, Evernote is the workspace to get it done." In addition to how features and other products have been promoted around the idea of going 'paperless' by scanning important documents into Evernote; bank statement, tax returns etc, there ought to be a sense of responsibility in the way the data is secured. Data synced to servers is encrypted, excellent, and as it should be. The functionality to encrypt the individual contents of notes is there for all to use; many people are wondering why this either has not, or cannot, be extended to encrypt notebooks as a whole (how Evernote were to technically achieve this is another matter). As for password protecting machines; that doesn't solve this particular security gap. Looking at it from a couple of scenarios such as poor user security habits (not locking systems when stepping away), to providing access to other users, security vulnerabilities within the operating system, malware etc, mean it's not a viable 'solution'. A really quick example, if a Windows vulnerability provided access to the user account, with Evernote having notebooks without some form of password protection, where would the buck fall for an Evernote user? Microsoft for having vulnerabilities in the Windows code, or Evernote for not doing everything it can to protect the data that they claim to be the place to store; it would likely be both sides. So while there is currently the option to encrypt individual note contents, why limit it to such a small area of their service functionality?