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.