A gambler must gamble responsibly. When a person cannot participate in gambling responsibly, he becomes addicted to gambling. A responsible person can never become addicted to gambling.
The person the mentioned here is a total gambling addict not just a gambling addict he is a mental patient otherwise he would never have treated his family's little granddaughter the way he did. This person should be given a severe sentence because after seeing his severe sentence, many gambling addicts will reform themselves.
Yes, with responsible behavior, gamblers will reduce their gambling and may gamble just for entertainment. Apart from that, he will also realize that he should not gamble excessively, because winning is very difficult to obtain, but he will often lose.
Yes, that is the consequence if someone is seriously addicted to gambling, he can do anything beyond his common sense even though in the end he will bear a big risk, for example someone will commit a crime and break the law. Yes, that's the result if someone is crazy about gambling.