would you advise him to stop gambling like crazy and return to the family? because there is no way you can stay with him, you have a family to take care of!
He looks still young, is it true?. It is very pitiful that the negative impact of gambling addiction like this, not only the parents but also their children and wife become victims of their infatuation with gambling. I think this has disturbed him mentally and psychologically so much that he can't think rationally and realistically. If it's really happen like what you told, I just hope for him to be rehabilitated ASAP, if no one takes a hard and firm stand on him it will harm more people sooner or later.
luckily he is not a criminal, he doesn't rob to gamble
Indeed at this time he is not a criminal but I'm sure soon he will become one. Not meaning to look negatively, but if the way of his mind just can't think clearly like that of course it could be if he lacks or runs out of money to play the gambling game, he will definitely do anything even become a criminal to get money so he can play the gambling.