This reflection is very important but weighty, some people have come to point when gambling begins to affect them in hurting ways like financial stress, strained relationship worries or even shame, it really requires honesty to admit to what you experienced with debt as a result of gambling some people won't and some can relate.
As sad as the story you mentioned sounds, it shows it can only be caused by addiction, this happens when gambling has taken a person over, some lose their sense of judgement and empathy totally but that isn't an excuse for violence, rather should highlight the dangers of unchecked addiction both for the gambler and for others around too.
I personally have not gotten into gambling so much but I have seen how it has wreck the lives of some one that are close to me in aspect of financial stress, so off course with that I just don't want to have taste for myself because I don't think it's worth it