These days gambling is fun and enjoying and you can play whatever game you want for money but due to that it also provides a lot of problems for some people.
They get greedy and addicted and wil get in problems soon or later, I think that gambling is not wrong but that you have to control it.
That's some correct advice as greed always ends up in losing what you have had before, and that amount is something which could be considered something extremely important in terms of an extra income, and if you are too much addicted, then chances are you might go bankrupt by betting everything into this...
Yes, this is the main problem. People without limits can waste all of their money, salary and goods with gambling and become hobos in a very short time period. Many people can't gamble because they don't know when to stop, they are insane... But if everybody was normal, I think this problem won't exist, because everybody would know their limits.