I have learned only one lesson in my life that gambling can never bring anything good in a person's life. It helps in creating social disorder as well as organizing strife and major crimes. A gambler can commit the heinous crimes of kidnapping and woman abuse in addition to theft and robbery to manage his money.
I think you've made wrong perception about gambling and trust me that isn't true at all. A gambler won't commit any crime or do kidnapping but someone who's highly addicted to gambling can do such level of things and we at this forum always suggest everyone to be safe from gambling addiction by learning about gambling responsibility.
By the way, crime isn't done because of gambling but because of someone's nature. Even psychology proves that criminals are born either genetically by birth or get in crime due to their childhood environment. If a criminal becomes a gambler then he/she can do such crimes while not everyone is going to do something like that.
I think you are right that not everyone will behave in such a heinous manner, I feel that those who do that are basically used to doing that, or their friendship environment also does that which causes them to also dare to do the same.
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.
I affirm your sentence that indeed gambling does not do that to people, maybe there are one or two people who become like that, but I think it goes back to their character, because there are also many addicts who do not do that even though they have lost a lot of property in their lives, that claim is too much to respond to the impact of gambling, I think it emphasizes the opaque articulation of gambling.