Whatever his other reasons are, the rockstar has occupational pressures to use heroin, drink heavily, invoke dark energy, etc. The reason is the same that gladiators have: the object of Bacchic energy must be closer to death. What else could we be faster approaching by fast living? Like the gladiator, he must be alluring as well, and occupational pressures demand him to be sexually prolific.
The hypothesis of that the rockstar is engaged in mere hedonism or the gladiator was only in it for the girls misses the crucial element of death. If hedonism sufficed, Sardanapolus or Hugh Hefner could be objects in a Bacchanalia. But while we can envy or pity them their actions cannot energize the crowd.
The Ring of Gyges is the crowd. Whatever we do within it is not our responsibility: kill persons in a soccer crush, pillage whatever we want from a store, urge the victim-priest of the Bacchanalia to conquer, wound, kill, etc.
To place sex and death together in a single priest-victim, or to go all the way to the door of non-being and yet be fertile there. It is a desire to conquer death with our most creative of powers.
Christ had to be stripped naked, not in allure or fecundity but in degradation and physical conquest. We raised him up to have a better view of the crowd and our power over death.