Actually, reason for saying this is that it's not a good idea to gamble when you are drunk because you might exceed your gambling limit and also gamble recklessly. And as someone who's family responsibility is on him/her, when you become addicted to hard drugs or gamble the children and wife's (those who depends on you) will suffer because there's no other means of survival.
It is like that, just as you say, that is why people who drink alcoholic beverages have to control themselves, especially when it comes to alcohol. Once in a while I Drink a few beers, not many, but it is also to refresh myself, and although I am running a lot of Errands I Sometimes Sweat a lot, and that quenches my thirst. There is nothing better than if you are very tired and thirsty and you drink 2 beers, that to me is like drinking some kind of miraculous drink that restores me, but only for that. In the game, if I go into a physical casino, I drink the normal amount, like what we "social" people call it.