You had to learn the hard way. Gambling is a choice, and you becoming addicted is a result of your poor choices. You're not the first one nor the last one to suffer the aftereffects of gambling addiction. However, it's wrong of you to expect money from the casino and trying to shift the blame, that's what you did in your initial post at least, as your attitude has shifted in the last few posts. Perhaps you've understood you were wrong, but the starting thread mentions only what the casino "should" have done according to you, but not yourself.

Anyway, you've messed up, badly, pull yourself together and start repaying what you owe. Don't gamble, ever again, it's not for you, and seek the assistance of a professional. Apart from that, there's no reason to discuss this even further, as there's nothing that can be done.