I also stopped using any of Google's services, because their products are made so smart, that when you realize why it's free, you've already given up too much of your data into the wrong hands.
Enabling the location services on your phone in example, asks you only once to "increase" the precision by using using cellular, gps and nearby WiFi SSIDs. That's because Google lost a lawsuit for illegaly collecting a database of all SSIDs. Now they let you do it.
But think about it, how can they improve the precision of your phone's location services, when GPS + Celular already are accurate within 1-2m? I mean nearby SSID's won't magically give you military precision and more precision than what you have with GPS+celular alone is not even required.
I'm using https://swisscows.ch instead of http://google.com, because it's more secure, faster, less personalized, equally strong in features and provides me with more accurate results than duckduckgo.com + it has semantic filtering tiles that I really started liking.