Many believe that gambling is for young people online as they need thrill and and fun. But I think that even old people can enjoy gambling. There should be any age to retire from gambling at all. One can do this activity and leisure time and thus it does not affect retirement related activities also.
Like I mentioned the mind playing a big role when gambling simply shows when a person should stop not minding the age. A young gambler can engage in all sort of gambling activity but still lack a sound mind to play right, I will advice that person to stop for awhile meanwhile an old man will be able to gamble proper without mental disorder, once the mind is build to a certain level gambling is no longer a problem except they decide to stop without stress. Gambling is not a job, the word retire is about quitting a job, work etc, gamble at your free and comfortable moment also not with the aim of chasing after wins.