Addiction is usually developed when you are having great fun in doing particular activity and you forget your line in that and that can harm you . Addicted person doesn't care about his loss or harm he is soo much into this that he dates himself .
7-10 years ago. can be said, I am one of the gamblers who have a tendency to addiction which is quite severe. yes, I have played almost all types of gambling games, especially land casinos.addicted people, not easy to understand, like you said. at least everyone, has a case that doesn't always have to be the same. but the impact that is most felt for addicts is the social impact. people who already have a tendency to be difficult to stop, including gambling activities.
So far, I'm still doing gambling activities, especially football. however, not as extreme as it used to be. I only do gambling three times a week according to the schedule of football competitions. for me now, gambling is part of the fun entertainment to fill entertainment after work activities. and if I get a win I just consider it a bonus of the nice things.