I can't say that I am talking from Experience as I have rarely Gambled anything but I do feel like Gambling is indeed an Addiction.
We all know the saying that goes around the Casino Circle.
# The House always Wins
It is quite true in a sense as if an objective minded person sits and starts calculating all the things that goes around with Gambling it should be clear that sooner or Later the person Gambling ends up on the losing side of the Bracket.
The reason why I feel Gambling is addictive is very simple. When we win once or Twice and we make close to double our Money our mind releases endorphins into our body which is very addictive in nature so the next time we gamble we all search for the same release of Endorphins to feel good no matter what the consequences are.