In my point of view, there is nothing wrong in gambling. It is just a game that needs a wager to be able to win a stake. All the decisions, actions, emotions, psychological breakdown, addictions, are people's doing. Gambling is just gambling, why will it be wrong. If a person play in moderation it can help relieve stress and tension. And be able to refresh people. It is the uncontrolled action of people that is wrong and not gambling.
We are different in that point of view. It's ironic that I see advertisement from gambling site as a teaser and luring a normal person into becoming a gambler.
In clause "in moderation" -we can't measure on up to what extent a gambler would gamble, usually we forget about that same as the way we want to forget stress by betting ( if we consider it as stress reliever ).