As long as you can keep it under control, I think it can be okay; addiction to gambling isn’t always as bad as people say. However, it’s important to remember that the line between fun and dependency is thin.
By definition, isn't addiction assume somebody has a lack of control over their behaviour? I think having an addiction and perfect control over your behaviour is contradictory. I've never heard someone says those things are possible. Maybe you mean something along the line of "interest", "hobby", etc? I dunno, it's like saying you're addicted to drugs but you can control when you take it without any problem at all.