That is guaranteed in gambling, to lose. Being rich or poor, it doesn't have any difference at all when you're going to lose money. You can win but not a lot and then lose again. The cycle will continue and it's like how you'll keep your money from your wins. If you're not wise and manned up, you'll lose again that money to the casino but if you keep the entire thing and just gamble some other time again, see that it doesn't matter whether you're rich or poor.
That's how every gambling game goes and there are more losses than wins. Maybe there are still quite a lot of gamblers who are aware of this and they are too lenient because they keep getting what they want.
Most of us are aware of this but we just choose to ignore those matters because what is important to us is we gamble, we win and if we lose. We're just going to take a break for a while and then be back at it again.
Here I call it joy and they forget that they often lose in gambling. Emotions will subside if they win and that is a mistake they cannot control. It is better to gamble at another time and I agree with you when you have made enough money that day.
I agree, if you can't find yourself lucky and at a bad shape, you shouldn't gamble. But if you can control yourself and you think that you're totally fine if you can comeback at anytime with some budget again, do it. Otherwise, don't go any further when you can't take it anymore.