There are benefits to gaming, but there is also a law of diminishing returns involved - but the games and society don't seem to encourage finding the balance, as the games we play (not just PC - but also the social gamified experience) know us and our weaknesses far better than we know ourselves. This means it can squeeze and drain us before we even notice how parched our mouth is. There is also the opportunity cost, where even though there can be benefit in the games, there may be more benefit doing something else. '
I work with companies and occasionally take part in hiring process, as well as training new employees. Gotta say, I am not overly impressed by a lot of the gaming generations :D