I don't think age has any effect on gambling addiction. Personally, I have an opinion that, people who have more free time are prone to gambling addiction. They just start playing for fun and eventually finds difficult to get rid of it.
P.S: Don't post for merits. Do contribute more meaningful contents and the merit will follow.
Age really do have some effect even though you may see some adults behaving like small kids sometimes, so in a way one could say that maturity comes to play most of the time. However, we also have to understand that there is something they always call youthful exuberance as they tend to start facing life and having to make some decisions while learning from their mistakes, and in cases like this, being exposed to gambling can really make a huge difference in their level of addiction.
Yes, there is no doubt that even old ones could get addicted depending on the mindset they bring in, but any old cargo that has experienced life in its thick and thins will know never to pursue profit in gambling, which is one thing that is most prone among the young ones.