Google owns me.
I for one welcome our Google overlords.
+1
If anything, thinking about online privacy has made me more conscious about my online "identity" and trail as well as the information about myself that is "out there". It has moved me to exercise more caution and control over what sort of information about myself I want others to see. Google gives me an incredible degree of control over this and I really like how they are so open and transparent about what exactly they do with the data you allow them to collect about yourself. I also applaud their efforts to be as transparent as possible about the data that Government agencies request about their users.
For my part I am immersed in Google's ecosystem and as I fully trust Google with my data, I give them access to everything, be it my web and location history in Google Now and Maps, usage statistics in Chrome, Gmail and Calendar based cards on Google Now as well as my Google+ account and files on Google Drive. I love their products and services and sharing my data with them only makes them work better and in return they can present me unobtrusive targeted ads that are actually relevant to things I might be interested in. I get better and free services and Google gets the data they need to better target ads and keep their business profitable. It is a win-win situation.
When it comes to the issue of online privacy, I think the issue is not, or at least should not be, about witholding all information about yourself from the internet (if that's your goal you should just stop using the internet altogether), but rather, making an informed and conscious decision about who you trust and share your personal information with. I like to think of it as when one chooses a bank or an insurance company. You make a choice of which bank you decide to trust with your personal information as well as your money and earning/expending habits and so you are confident that such information as well as your money is secure with them. It is not much different when it comes to the internet and with whom you decide to share your personal information, location and history as well as files such as photos and documents. For my part I choose Google, as I trust them and think my online "identity" as well as my data is secure with them. But someone else may choose Apple and their iCloud solution, or Yahoo, Microsoft, Dropbox or even Facebook.
In the end it is all a matter of making an informer decision and having control of your online data as well as being smart about it. If you do you shouldn't have anything to worry about.