This is just like you are going to cinema to watch some movie but you already know you have already seen that movie. Would there be some charm or enjoyment? I am sure it wouldnt be like this. Then how can you even think of such big and foolish ideas that might it be changed when you are gambling. You might be seeing things in bad times when you go into it voluntarily.
That is not the point. Watching a classic movie like "The Godfather" will have the same charm that it had few years back. Its because such movies have a replay value and not like this spinoff shitmovie remakes that Hollywood makes these days. On the other gambling is the same loss and recovery cycle everyday - of course it might seem to others that this get boring at times but trust for addiction gamblers it is not.
They will keep on gambling even if they lose because they are addictied and are going in the vicious cycle of loss and recovery followed by loss again.
Most of the people only portending that they are playing gambling for fun or for enjoyment. I think that the main reason for their playing gambling is to make money and nothing less. They do not want even their close friends or family member to know about his gambling addiction.