Damn, rich people that can waste too much money just to gamble and lose it. It is not that OP literally let it lost but he already lost so it is a huge amount that we are talking about within just a few days or months just by playing gambling.
Anyway, average people will secure their needs first before they take a risk of playing gambling.
It shouldn't be only the "average" people who keeps track of their money. Every people should secure their needs first and abstain themselves from gambling unless they can afford to lose and just for pure entertainment and adrenaline rush. And a rich people "can never" waste too much money. This is how they end up being broke, no matter how rich they are.
People who have become addicted to gambling do not care about their needs, if the money they have can be used for gambling, they will immediately bet and the rich people will tend to spend their money to spree, whether for women etc. I can't imagine, how strong the OP is to calculate all the losses in a year, for me it's very difficult because it will only make it more depressed.