i will admit that i might be a problem gambler myself. i have spent lots of Bitcoin on online bitcoin gambling games and can't say i won more than i lost. i however, see gambling as a form of entertainment and not a way of making money, as recommended by other posters in these forums.
here's the link to the documentary on Youtube:
https://www.youtube.com/watch?v=I-uM4XSi0Fothe film maker explicitly says that his dad was a problem gambler and got into crime to pay for his habbits. There have also been breakthroughs in psychiatry that treat gambling like any other addiction, (iE crack or cocaine). some scholars even argue that gambling is as addictive as crack.
i admit that i will gamble, but I consider it entertainment rather than a sure way of making money. I try not to gamble too often, but when I do i set a limit and i don't go past it.