Google also knows all the secrets of General David Petraeus, or anyone else that uses Gmail. And everything you've (secretly) searched for. Google's business model is based on aggregating that information and gaining value out of the data, mostly in the form of advertising. As soon as it lets a major secret out, even just once, it's game over, and no-one will ever trust a secret to Google again. This is why they publ…
CyanogenMod is on my list.
EDIT: Oh, and "backing up" my contacts without asking me. That made me livid, that's the height of arrogance. And yet I still use Android.