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I really want to understand why is that because, it’s a little offensive and disrespectful to the line of business from my view point. Perhaps I can be convinced otherwise with some logical statements of fact!
Gambling is a business of earning income by providing a place for customers to have fun using small amounts of money that they can afford to lose. But unfortunately many gamblers or even non gamblers misunderstand the concept of gambling. So some people will judge gambling negatively and even a losing gambler will say gambling is bad. While they don't really understand the concept of gambling.
You are right, there are quite a lot of people who view gambling wrongly, such as by assuming that gambling is a solution to their financial problems. In my environment, there are quite a lot of people who have financial problems but what they do is bet the money with the minimum amount they have in the hope that it can become more. By instead of making it a solution but with a greater chance, it makes the situation more complicated. On the other hand, there is indeed a chance or opportunity to win but this is not guaranteed, sadly they consider this victory as something that they will definitely get.