I think aged people gamble for fun too. At their age, there may  physically strong to engage in other activities. Gambling can be their way of reconnecting with their youth, make new friends of similar age and interests, and just relax.

Some people might think an age gambler is giving signs of a gambling addict  but for me I see it as a way of enjoying senior years and even extending their lifespan because when they come around these places and play games it's a form of exercise and it can help keep their body active. Since  gambling for profit at senior age can give them heart attack when the game cuts, their frequent visit means they are coming for fun and enjoy being in the casino house.
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We can come up with so many things from how they were when they were young and how rich they are that they could spend more to feel special at their age. If they figured this is the last days they can enjoy life then good for them.

But I hope they will not lose a lot of money that they will not be able to pay the nursing house anymore.