My search queries start with Siri and end in Safari

Apple knows my web browsing behavior because Safari is my default mobile browser app syncing my history, reading list and bookmarks with desktop Safari.

Apple knows where I work, live and my travels via Apple Maps and Passbook

Apple knows a few of my purchases via ApplePay both in the real world transactions and via ApplePay in apps.

I used MobileMe mail before switching to GMail and have considered switching to iCloud mail.

Apple knows a lot more interesting things about me than Google.