Second, if you lose and don't have nothing left, it means you need to stop gamble.
You can see here how the casino is built to exploit the human nature. The temptation of money fuels the greed, then comes the attempt to win which leads to a loss and fuels the anger which brings the next bet. In this manner one bet leads to another the chase of losses is not realized soon enough.
That's how gambling works and this is why one has to set a limit to what you can gamble with within a day, week or month base on your capacity. This isn't applicable to only online gambling alone but also include street card or dice gambling. The more you lose, the more you wish to play to recover for your loses. Also the more you win, the more you play believing you can make more.
Being able to manage these things, such a person would not become an addicted but a diligent gambler who would look for methods to be the house instead of actually being the player.
Hmmm, that remains the real fact but looks somehow difficult to actually do. One just needs to gamble responsibly without allowing it to affect his/her well being.