I think you are too serious about choosing a casino. Playing a gambling site is more about the fun than about profiting from investments. When choosing an exchange, for example, you should be more serious as you have more chances to profit there or to earn interest from whatever. As for online casinos, long term odds are against gamblers in all cases (otherwise, casinos would never operate). I personally use some methods like gamblers' reviews and all this blsht like license. But to tell the truth, you never know. Even a decent casino may close at any moment.