In the meantime, I want to discuss the reality that a gambler can reach the age where he doesn't want to gamble anymore. When we start aging our priorities in life start changing. We get to have more responsibilities in our hands. Remembering the extent to which we gamble when we are youth it is observed that gambling can be more appealing during our youth stage. But it's less when we get older.
The reason why most persons stop gambling while aging is because of financial security which I mentioned earlier about taking responsibilities, being focused on their family, retirement, and other life goals which gambling may not be important at this stage of life.
What do you think are other reasons why gamblers may choose to stop gambling while they are aging?
Maybe there should be a poll/survey among old gamblers to answer your question, but unfortunately I don't know about such poll/survey.
I'm not old enough to judge by myself about when there will be a moment, when I won't have the desire to gamble anymore.
Maybe you should ask older gamblers, if you manage to find them somewhere around the place, where you live. My personal opinion is that age doesn't matter. I've seen old gamblers playing slots in casinos, so I don't think that age is something that could stop gambler from gambling.