We should not quickly consider that gambling is wrong actually it is not , what truly wrong is that sometimes we are getting so greedy if we have won so much from it and also those people that are not taking their responsibilties seriously and forgetting about their family .
It is wrong only if the gambler felt a negative effect from playing gambling.
Like financial instability where you lose a lot of money that affects your living, Being irresponsible socially especially to family, and losing time to your self.
So other than that if gambling doesn't have a negative effect to you then still it is fine to play and not cosidered it to be wrong.
But still remeber play for fun and not for money.