I think that sex addiction is too complex to be simply attributed to shame and relief in one group and excitement in another. Celebrity addictions are different in that the fame gives them access to behaviors, possessions, and people that the rest of us can only look at and dream of.

But addiction doesn't care about that. And sex addicts aren't (most likely) addicted to adrenaline; they, like all other addicts are, neurochemically speaking, addicted to the dopamine their brain releases during sexual activity. It's a worthwhile distinction.