I completely agree that you shouldn't trust Google not to break the law, and there's no real way to prove they aren't storing and using that data somehow. They'

I completely agree that you shouldn't trust Google not to break the law, and there's no real way to prove they aren't storing and using that data somehow. They've almost certainly weighed the pros and cons of retaining and using that info and we don't have any clue how that shook out. All we can really do is guess whether or not they think its worth the risk and make our decisions accordingly. Personally, I think my chance of having my history tracked and abused is lower logged in + history off versus being logged out where I don't have the option and Google can still fingerprint me 17 different ways. There are obviously many more options for the more privacy conscious but that's where I'm at.