The danger of gambling addiction e just the gambling part and the money part!
You just have to realise that when you gamble, the odds will never be in your favor, even in poker where there is already some skill involved, the odds will never be in your favor, even if you win! Consider that the dealer is only borrowing you that money! And that is the second true danger. Like with all drug addiction problems, it only starts being a problem when you don't have any more money. And like drugs, gambling will suck all of your money!