I prefer to use G+ to post stuff I don't want leaving a certain group (ie, pics of the kids and family, etc). I mainly share with my family circle and sometimes "tweet" links to my friends and family circle.

I have no need or time to play the Facebook game (was fun at first, but all-consuming in the end and not worthwhile).

Google+ is Facebook for grown-ups and families, and it works as designed for me. I use LinkedIn for all my work-related social networking, which pretty much covers the rest.