Well for gamblers we don't consider that wrong but for people who don't gamble, for them, gambling is curse, gambling lead you to the wrong path so yeah :/
Well if you are an addicted gambler, of course you are going to say that gambling is wrong. I would it is going to be wrong if you can't control it.
Know your limitations, try to measure your funds and capital if you are going to gamble. And always remember that don't gamble if you don't want to lose.
Just gamble what you afford to lose, accept the fact that it is between winning or losing.