I don't have any story to tell but based on my knowledge gambling most of the brings you loss instead profits. So as long as you avoid gambling then your safe.
Its good to know that there is a person like you who don't play gambling but have an idea and knowledge about it. I think there's nothing wrong in gambling, it will be wrong only if the gambler become greedy and become addict into gambling.
That is true, gambling only becomes wrong when we form a bad character around it. If you steal or borrow to gamble then you are making gambling a wrong activity for yourself and those outside gambling will perceive such attitude as wrong.