Most time gambling can affect one relationship, but it depends on how the gambler approach gambling and the impact of gambling in such folk lives . Gambling can lead to slot of things especially when one is not responsible, like short temperament due to losses , reckless spending , and some other negative stuff . But if one can actually keep to his budget and gambling only when necessary not frequently then be able to secure a healthy relationship while being into gambling
Gambling that can affect a relationship is gambling that is done excessively, for example, a head of a family has the responsibility to provide for his family, but when the head of the family earns income, he prioritizes gambling. Although the goal is to gain more profit to be able to meet needs more freely, the determination in gambling, this profit is not guaranteed to be obtained, losing could make the head of the family lose all his income. On the other hand, as you said, if you can control everything well, being responsible for the family and prioritizing it is good, by trying to do things that are enjoyed without causing problems that can impact family relationships.