Generally, young people find themselves engaged into gambling than the elderly people. Most young people are naive and curious to make money via gambling. Which is a well known reason for most participants of the game. Young people need money to achieve those feel good fantasies of theirs, and gambling portrays itself as the only available means to fasten up the track. Some aged gamblers, play for fun. Although they also need the big wins, but it doesn't drive most elderly people into the game. Compared to young players.
In places like the USA and Australia most survey point at young people as the bigger population in gambling. Same is applied to other countries in the world. In my observation after a few conversations with friends that mentioned celebrities as the main reason why a collosal amount of youths engage into gambling. They is a high rate of celebrities who wager lots of money online and share them with their followers. Such things lure in most youths into gambling. And elderly people don't follow celebrities as young people do. In a nutshell, young people have the most number of gamblers.