Chromebooks are useless unless you log in. So at a stroke my privacy has been blown away.
Then I have to use Chrome, Google's primary spyware product. I'm afraid I wouldn't touch a Chromebook with a 10-foot barge-pole. At least for me the ideal environment is a Linux machine (so I can configure it how I wish), running Firefox with AdblockPlus and NoScript. Now that is anathema to Google.