Addiction is fuelled when the person doesn't have self-control anymore; when they can no longer differentiate their normal playing and when they are breaking limits, they don't see it as anything wrong, and they even start chasing their losses as a means of trying to recover money, and when they make a win, it's never enough; the eagerness to win more is always there, and their greed starts to control hem. It's just something that if one is not careful enough, they might end up getting addicted without knowing it.
I would have tagged the adolescence as people with lesser control, but gambling knows no set or group of people, due to the general effect it has on everyone's emotions who ventures into the game. Additionally, any player could chase losses, as a form of disorder, fewer people in that condition would handle the problem. Once the limitations is broken free, the player be it young or old, face similar reactions. Though the younger ones become deeply attached to it due to the level of their thinking.