I check FB a few times a day, but I rarely post anything. I use it to vicariously keep up with all 45 of my "friends." I have reconnected with several people from my childhood, which is good.
I don't play video games or any games for that matter (including cards or board games), so that stuff has no interest for me. I have 2 "real" friends that I often chat with over FB, at odd times of the day, when I don't pick up the phone instead. I am much more addicted to TE! But, I also consider TE educational and since I have met many people from TE and ride with some of them, I don't see it as totally virtual. I can check TE at work, when I have down time, but FB is blocked. I guess some of the clinicians had a problem!
I find that this is very individual. I generally stay away from most technology. I don't have a Smart Phone, I don't know how to text, and I rarely use my cell phone. But, I do like looking at Facebook for some reason. My DH dislikes FB, although he does have an account. My older son has about 400 "friends" and occasionally posts, but lately has been using FB more as a business tool for connections. My son in the military thinks FB is evil and that they will steal your identity. Yet, his wife is on all of the time.
I see it as part of life, but not an important part. I could never be on it 3-4 hours a day.