Google build genuinely useful products, and use the knowledge it gains about you to show (generally somewhat useful) ads, and generally stays out of your way.
Facebook on the other hand desperately tries to manipulate you into consuming as much time as possible on their platform at almost any cost, using lowest common denominator tricks.
It's just kind of a false choice. I use FB to keep in touch and chat with friends, find out about local events, follow various interesting people, etc. google tried to do the same thing with Google Plus and failed. But I certainly don't feel manipulated by FB, I feel they are providing me with a useful service.
I agree with everything you said except for "generally stays out of your way."
Try blocking all Google domains via a hosts file, and you'll see that they have put their hooks into all kinds of systems, and do so in ways that seriously impede how normal web-pages should function.
Google build genuinely useful products, and use the knowledge it gains about you to show (generally somewhat useful) ads, and generally stays out of your way.
Facebook on the other hand desperately tries to manipulate you into consuming as much time as possible on their platform at almost any cost, using lowest common denominator tricks.