When you gamble, you are more likely to lose than win due to the house edge. In the long run, you would be suffering a loss. Gambling is more of a form of entertainment than a source of income. Always gamble what you can afford to lose and manage your money well.
Indeed its not very wrong but the fact is that gambling is something that you have to do for the fun and not for the profit.
I think that is already told but its pretty funny.