Gambling is just so addicting and this is all because of the fact that its very enjoying for a long time period plus a lot of people get greedy too.
Yes people get too greedy and stay doing it over and over till the lost everything, they want to win their money back and are coming back again and again.
I do not agree with you, there are those who play to regain lost money, of course, but I think people are playing to add excitement to their lives. According to your thoughts, rich people should not gamble because they win, they win, they work, but it does not.
For example;
https://www.youtube.com/watch?v=SvMm5HzNCZU