if you are playing gambling in a wrong way then it is really wrong, but if you are plying it for in a good manner, and you have a special strategy of playing then it is not wrong.
Yeah I agree with you, it is just going to be wrong if you doing something in exchange which is basically more important.
Just like if your family doesn't have something to eat and you only have some amount of money left in your pocket.
But you choose to gamble, then that is really wrong. This is the reality also here in my country there are a lot of gamblers doing that way.