Comment by FatherOfCurses

This ignores the fact that as a society there are certain desires that are agreed upon as harmful, such as CSAM. Everything must have its limits.

You use the words "so called addiction" as if addiction is not an extremely well-documented pyschological (and in some cases physical) phenomenon. Gambling preys on the fact that the variable reward rate method of reinforcement is the one that produces the most dopamine in our brains. Unless someone is acutely aware of how they are being manipulated it is very easy to become addicted to something that is financially dependent on your addiction.