Its depend of your winning. If you lose its wrong, and if you win its not wrong lol. nah, i think gambling its not wrong, why wrong ? it's can make you easy earn money and easy lose money. so be wise about gambling.
I think with lose is never wrong you can learn for your mistake with bad bet. The wrong with gambling is the people who can't control they will just bet and bet until they lose all. Is true that gambling is not that wrong, but they are some news that with gambling they became so addicted that they lost all wife, kids, and house.