Quit gambling now!
I hate gamble
wow! So because you hate gambling everyone else should quite gambling? That's quite hilarious. If what you're are suggesting is possible in reality, then no one would be doing anything at all because what you love doing might be what I hate and if I should obey you and stop gambling, you should also obey me and stop what you love doing.
It's okay not to love doing a particular thing and every gambling site understand that they are not going to serve everyone one and so they are only interested in a selected population of people that are interested in their business. Gambling is some peoples business and you telling others to stop it is same as wanting peoples business to be closed down. What you would have said that would have been reasonable would have been that you hate gambling addiction and that people addicted to gambling should stop it. Then it would have been a reasonable conversation to engage in .
It is each of our human rights, it is up to us whether we want to gamble or not because we use our own money to carry out the activities we want and do not cause harm to other people, and if the OP hate gambling, it is up to him but don't force other people to do the same thing like he did because people have different levels of enjoyment because there are some people who consider gambling as entertainment and don't mind the expenses they spend on gambling.
It is true that forcing people to stop gambling is the same as being detrimental to the person who owns the business. We cannot blame the game but instead blame the person who misuses the game to make a profit and instead of making a profit, it causes them to experience big losses and tries to chase their losses so that in the end causes gambling addiction. And when someone is addicted then the OP invites people to immediately stop their addiction, gambling will not be a problem if you can use it well.