That is correct, and that is also one big sad thing about all of this. People actually believe that they will enjoy it and some even use it as an excuse to continue their bad behavior. However it is not possible to enjoy it, biology does not let you. At best it will be a very short high feeling which will dissipate fast because of the addiction. That is also one of the reasons why big winners ruin their winnings, it does not feel good as they expected
Normal gamblers should enjoy the wins, meanwhile addicts probably can't enjoy it due to expecting more wins. That's why we must avoid addiction if we want to enjoy the gambling process. Also, we must be aware to keep thinking realistically. This will ensure us to not expecting something impossible such as winning every time.
And also the winning money goes to the wrong place. Empty and uncontrolled spending, which can lead to other addictions. For example, it can be alcohol addiction. I read about one such case. One family managed to win a lot of money. Several years passed and people were surprised by what happened to them. They became drunkards and drank away absolutely all the money. It was hard to believe, but this also happens.
This is related to the nature of the people. The family who become drunkards and spend all the winning money, they probably have bad nature. They may have no self-control, no future plan, and no financial management. If a family has no these things, it easily spends everything instantly.