If you're bored and you have a lot of money that you can afford to lose then gambling is one of the option, its gives you some excitement and chance to double your money just by betting. For me, the purpose of gambling is to provide some entertainment for middle to rich people to have some fun using their own money.
If you have a lot of money, it's better not to use for gambling, and it's better to use the money to help other people who needed. Although you can do whatever you want to do with your money, you can decide what is better for you. For rich people, gambling is to entertain and have fun but not to make more money because they have money, they want to spend their money with their friends. But for people who have the purpose of making more money from gambling, they will not be able to do that because gambling is not a source of making money.