Sad thing with this activities, instead of treating this venue as entertainment gamblers see this as good source of profits. At first they are able to control stopping in the right time and qui with decent amount of money.
While, afterwards greed start to comes and instead of enjoying some winning gamblers start to keep playing and keep trying to win more only to realize that luck is not always behind them. They'll keep pushing to the point that addiction happened to them and unable to stop it and control it.
You'll never see gambling as an entertainment unless you're a very wealthy man, that's the truth. Automatically those normal people who play gambling would always be after the profit, they do gambling as a living, that's why gambling also makes a living on them. But we never blame the gambling sites, instead we should blame ourselves, or none at all because what we are doing (keep on trying) means we still do hope we could make a living.
Yes, it's half good and half bad depending on someone's situation.