Google owns the internet at this point. For general use purposes, they ARE the internet. So avoiding them should really have at least SOME effect before it's even seriously considered.
What does getting off Google do?
It doesn't hurt them, as there's no way a significant number of people will take action, at least in the near future.
So, then it must be done for you. By not being in these services and having all this data collected on you, what do you actually gain? Likely, nothing at all. You won't be able to be tracked down as easily if Google turns evil, sure. If their data is breached in a meaningful way, sure again. But, for both of these, emphasis on "as easily". At this point, if you're looking to maliciously track down just about anyone, it's not hard at all. You'd have to go fully off the grid to get this. And in that scenario, what do you gain again? We follow down the same road of "I only gain something in very unlikely scenarios" again.
So to me, the only way this type of perspective makes sense is if you believe those very unlikely scenarios (from my view) are much more likely. And if they are, we're all fucked already, and being one of the few to be off the grid probably won't matter in the end.
Basically, at this point, you've already given yourself to Google. Rather than decide whether or not to trust them, I think putting more effort into trying to influence them towards "not being evil", as they say, is much more of a realistic move for someone with concerns over data, privacy, power/security of all this, etc.
Am I missing something?
PS: I understand Facebook - for some, there are no significant benefits you give up. For most, you're going to give up a lot more with Google.