If I'm rich there's no need for me to gamble anymore I'd rather spend some of my money to satisfy my needs, it's a win win situation.
I agree, if rich, it is better not to play gambling. but I do not agree if only spend for necessities. you better start a business. You can open a trading site, gambling site or casino.
Well if you are rich, it should mean that you have a stead source of income from businesses that are established and "run itself" so to speak, which means you get guaranteed money monthly or even daily, then you are pretty much free to gamble without not stress of becoming bankrupt.
The problem is if you get rich from something lottery, where all off a sudden you get tons of money. Then yes, gambling is stupid and you must put that money into use with a business that is hopefully a success.