I don't find Facebook useful for much and find that it brings the worst out in people, therefore I don't use it. I do find Google useful but choose to use it very sparingly - no search, no mail, no maps. I do use Drive, Docs, and Photos (for now). The problem I'm running into is some of Google's services are so exceptional compared to alternatives that it's becoming problematic to use alternatives. Maps is an example…
Docs is the most egregious item on this list. Just use libreoffice. And the syncing capability? Kill two birds with one stone, host your own cloud storage (raspberry pi hooked up to a 1tb hdd) sync your documents AND your photos to it.