And then i thought about the Gamblers Ruin Rule. I explain simply to him that anyone who keeps gambling for a long time will eventually lose all their money, especially if they don’t have unlimited cash. If you're playing against someone with way more money than you (like a casino or the market), they can afford to keep going, but you can’t. No matter how lucky you are at first, if you keep playing, you'll most likely go broke in the end. After much argument he still made his decision to bet with the next payment he will get tomorrow.
I don't know who pronounced this rule but I do know that gambling is not 1:1 the casino to the player and depending on the type of gambling, a player can enjoy advantage up to 1:10,000 which means one win for a player with as little as $10 will cost the casino as much as $100,000. Although this is not easy to get but it clearly shows that your chances of hitting that target increases as you continue to play and with little bankroll, you can endure the pain of losing.
Finally, the casinos does not have unlimited funds, they can be wrecked and render bankrupt although this is not easy. By the way, we should worry about crippling the casinos but thing of way of taking advantage of gambling to improve our finances.