Addiction is usually considered when there are severe consequences in your life, like if you are obsessing with it to a degree that it is negatively affecting your work, or your friendships/relationships, your interests, you are isolating yourself from people because of the secrecy of it and also if you are spending more than you can afford. An addiction is usually used to manage and numb unwanted feelings and thoughts, so for example if something pisses you off ( and you probably don't even know you are pissed off ) and you find yourself habitually arranging a punt to escape the uncomfortable feelings then you may be addicted.