I can agree with you because most of the age people that I have been around gamble for fun. Most of them are already retired from work, and the gamble just to pass time and to have fun. Most of these men who gambles if you check very well to see what their gambling outcomes would be, whenever they lose don't react like some young gamblers who panic so much when they lose. most of this men gambles with ease, maybe they have better understanding about gambling and they are not desperate about gambling win.
If I can choose, I would like to see a casino full of elderly instead of full of teenagers or young adults.
Teenagers or young adults are still young, they still have a long journey to build their career and achieve whatever they want, they have a lot energy. While the elderly have too much time and they don't have any energy anymore, so they choose to spend their time for anything they want especially for entertainment.
Moreover elderly already have a lot experience, they know how to not waste their money, instead they gamble as low as they can.