those who have religion will say that it is dirty money. Well, this response has been around a long time ago. but, many people have hobbies like that and ignore them. even in my place, when you are caught playing gambling, you will be violated by the law. but, there are still many who disagree with it, many of them say that gambling is not a dirty money. I can only draw the conclusion that many people have different opinions about this, depending on their respective beliefs.
Maybe with that, people can learn to respect each others. I mean, actually people still can get friendship although have different perspective. But, as long we not interfere other people's business especially about beliefs, i think they wouldn't disturb us about what they believe.
I also think that when people are religious or fear God, they will stay away from things called gambling and say it's haram or hot money. so indeed we cannot forbid everyone's desire not to gamble. but we can live in harmony and not make them enemies. I was a tough gambler at that time, gambling money was a good thing for me. but when I'm close to religion or a catalyst for repentance I don't like it anymore. but I was there at that time.