It depends, there are those who are aware of their responsibilities and change their behavior, but there are also those who think that their gambling is not a problem at all. But I think that it comes back to the individual, in most cases it really changes the gambler's behavior because they think that their responsibility to the child is greater, so like it or not they need to change their gambling behavior.
Yes that's right it all depends on how they think, some are short minded and some are long minded, or what it means is that there are some people who don't think about the bad possibilities that might happen someday and some who don't think in that direction at all, but overall still gambling can be a trigger for problems in household relationships when you are no longer able to control yourself.
As for responsibility, I think bringing gambling into a situation where you already have full responsibility to provide for your family will only add to your burden because you have to meet two allocations of money which are to provide for your family's needs and also to fund your gambling habit, sometimes a person can experience a change in himself to be very irresponsible in his household affairs because gambling has a lot of temptations that can make a person fall into it unconsciously and eventually experience a change in behavior.
In my opinion, if someone has a stable income they tend to continue gambling, of course without neglecting their main responsibility as head of a household with children and a wife. However, concerns about changes in behavior due to gambling addiction are worthy of being underlined, because what is certain is that no one is able to control themselves all the time. Usually someone who is married will keep their gambling activities a secret from their children and wife, with the aim of avoiding conflict. It cannot be denied that many people decide to stop gambling because they have started a household, although they have a stable income.
On the other hand, it will be very difficult to stop gambling completely, especially if you are already addicted, and to stop requires awareness of the good and bad impacts in the future. There are also quite a few people who still continue to gamble even though they have children and wives, by managing their finances and good time management they still do it occasionally. It's true, it all comes down to each individual personal decision, but what you need to remember is that if gambling is making someone suffer, it's better to stop.