Age does not matter in gambling and I think that if your relationships are more important than gambling then you can left gambling at any age. But if you give more importance to gambling then it become addiction for you and you cannot eliminate this routine.
Age is not a problem for gambling but getting money for gambling can be a big hurdle for old people. If the old people ask from their children for money to gamble, I don't think children will give money to their parents for gambling. This may even destroy many relationships between the aged and younger people at the house.
If you are aged and you have money with you after retirement, you can enjoy gambling but if you do not have the money, consider it as your fate and do not argue with your near and dear ones to provide you with finances to gamble.