Most of the gamblers will agree.
But there are some that will not agree with this since they will say that they are having fun. Some of my friends do the same, even if they lose or win, they still think they won since they are gambling with us and having fun with it. For me, the definition of winning in gambling is learning something and that is usually that gambling will not take you anywhere since you are dealing with infinite risks.
I know right?. At the end gambling are games, recreation, entertainment.
The unbalances come when people forget that they are the things mentioned before. Happens with gambling, happens with online and offline games, happens with everything labeled as entertainment.
It should be done for fun if you want to have a balanced life. If you passed through something really awful and are depressed, seek MMORPGs and find shelter and relief in them, i personally recommend WoW or FFXIV.
Going to gambling without measuring the resources you will spend everyday will lead to self-destruction in a really fast rate. The same thing could happen with the other option but controlling yourself will be easier with those two games.