Regarding ethics: There is nothing ethically flawed about what Google is doing. They aren't selling arms or abusing animals so where does this line get crossed for you? They are in it for profit and can provide many of these services for free through advertising. Necessarily this requires an exchange of your general data profile for all the utility of their tools. If you pay them directly, then the privacy rules are different (as it works with many such corporations).
And you might not like to hear this perspective - but many really don't care. People share data about themselves at an exponential rate because the experience of sharing and the utility of the companies outweighs other concerns.
But you are perfectly free to go do your own thing. There's no secret Google police out to get you. You are not revealing some big conspiracy here, it's a well-understood exchange and many are just fine with it and many like you aren't. And it's all ok.