I've personally never felt comfortable with having my social life online and that's why I've opted out of using Facebook, Google+ or any other social networking services for that matter. My social life doesn't suffer because of that at all, in fact, my bond with the people who are close to me has become even stronger due to a lack of social noise in my life. I see my best buddies a few times a week anyway and when I really need to talk to someone else, I can just email them or give them a call. The whole Facebook/Google+/[throw in random SNS here] thing is a joke.