I remember read some article, saying that a survey had shown that drivers who are also gamers tend to be more alert while driving, compared to those who are not gamers(not that mean that non-gamers are not alert).
When I read that, I'm guessing they refer more toward the FPS gamers, considering their gaming environments that usually hostile. One have to be alert of their surrounding in order to survived in FPS game, especially when they playing online against other people, who unlike AI, tend to be more unpredicted and creative.
As for the social health, based on my experience, my friends and I used to hangout at cyber cafe to play our games together. Afterward, we would discuss on the gaming experiences we had while at the cyber cafe. We also make friends with other players there, eventhou we don't know each other at all, but once in the cyberworld(game) that 'band or brothers' relation created. After games, everybody would compliment each others on how well they play.
Well, my parents sure not worry much about me when I going out with my friends, coz they know that I wouldn't be going out drinking at some bar and get wasted and probably involve in accident while DUI, but instead I just going to play games.
I knew many people from around the world from gaming. Joined my 1st gaming clan, the eGO (Edge Gamers Organization) back in the end of 2008, when I bought Day of Defeats: Source. I joined one of eGO's DOD:S houses(subclan), the Foreign Legion. Wonderful fellow in the clan, just like how I feel right now in AS. Sadly, the happiness didn't last long. Due to some disagreement with eGO's head leaders, the leaders of Foreign Legion left eGO and form their own clan, the Foreign Alliance. I somehow decided to stay in Foreign Legion and eGO. Unfortunately, that feel that you're at home no longer there. With most of the familiar faces(avatars) not around, it felt like I was living in my old house, except now I have strangers living with me. Everybody seem to know each other more and I felt like a stranger instead. So a few months later, I left eGO and join the Foreign Alliance. It felt as if I'm back home, with all my family. But, as the old saying said, life goes on, and everybody moved on with their life. Now, I'm just a Ronin, wondering the gaming servers looking for some good fights. I do visit eGO's servers from time to time, playing there coz their server a high ping players(like me)-friendly. They don't auto kick you out just b'coz your ping is around 300-500 ping. Plus, I get see some of my old friends there.
PS - If any of you have Steam account and playing Day of Defeat: Source, Call of Duty 4 or Modern Warfare 3, look for me. My callsign is Alex SDU [FL] (FL stand for Freelancer). Add me.