Do not use all the money back to gamble, that's not wise.
I agree with this because we will always be able to gamble at any time but we should also be able to enjoy the results of the winnings we get because it is not something we will always be able to get, in fact the chance of losing everything can be greater.
Congratulations because you can control yourself well and choose to make a withdrawal and enjoy the winnings because usually we will be very tempted to increase the bet, especially if some of our multi-bet bets work well, meaning we can feel like we are a good analyst and think to make more money by increasing the bet amount.
Perhaps it depends on every gambler, and for those who have a lot of money, maybe they are not thinking of how big they win, they still going back to play again and again. But for us here, and I think the majority will agree, if we win, we might think of using that money in other things, specially if is supposedly "free" and it comes from the casinos. Just like in my case, I won last night playing online, never had the urge to comeback (perhaps later), and I used my winnings to pay with some of my bills, like credit card and even my internet bills as well for the previous month. Just so happy that the risk that I took paid eventually and everything was lucky for me last night.
Well, needless say that you are actually right, winning in gambling may not mean much for rich people, possibly because they already the most things the average and the poor crave and are possibly gambling for, for example, a rich person already have multiple investments in multiple places, have a house and no longer paying rent, have their own car, have everything they need in their houses, wear good cloths, eat good food, own good phones and computers, and most importantly, own big businesses generating good profit on daily basis in multiple places, what exactly will a person or persons of such class be needing the money they won from gambling for..?
I would even say that for people of this class, their reason for gambling may mostly be just having fun, though not bad to win money since winning also makes gambling more fun, but for type of persons, they possibly may not stop gambling after winning a rather huge sum, because they have far more than that in their different bank accounts, except on occasions where the money won is really significant to them, they may possible purse to reflect on the win and think of what to do with it.
And I believe I don't have to say that what or all this I've said does not actually apply to every rich people, for there still some rich people who are so greedy that they never ever contented.