Gambling does not teach as far as I have been in gambling until this moment, and there is no guarantee that people who are addicted to gambling do it also to their families to get money, unless their background is indeed a thug who is used to bullying people, so they do not hesitate to commit criminal acts to get money.
Yeah, even those who are addicted to gambling will never think about harming their family members only to satisfy their gambling addiction.
They might sell stuff that's needed for their family members or take loans in hope to make money in gambling but doing something wrong is out of question for the ones who aren't criminals by nature.
Gambling addiction is never promoted on this forum or anywhere else, most of us advice gamblers to learn gambling responsibility and also never consider gambling as a source of income.
The lucky ones can earn some good income from gambling but not everyone. In fact 95% or more of players make nothing in gambling and out of those most will lose instead of winning.
It's a game of luck and if someone's luck is good then he/she will win in gambling but if someone's luck isn't good then such person can't win but lose again and again.