The fifteenth comfort zone reaches for what lies beyond the line: for the forbidden, the sharp, the things one does not say out loud. The even and the permitted taste bland to it.
The system assigns to this zone directly: a pull towards alcohol and other substances, an interest in the forbidden and the occult, an attraction to what it is customary to condemn. The system treats all of this as the natural pole of the fifteenth arcanum rather than as a deviation.
The force here is real, and it finds an outlet in any case — the only question is which one. In a lawful channel it is creative work on uncomfortable subjects, the stage, investigation, working with what others look away from, saying out loud what everyone walks around. In an unlawful one it is what destroys the person and those close to them.
That is why the only substantive recommendation for the fifteenth zone is to choose the channel consciously, rather than waiting for it to choose itself.
*The calculation describes an inclination; it does not justify actions, and it certainly does not advise anyone to harm themselves. If a pull towards the destructive has become stronger than you are, that is a conversation for a specialist, not for an interpretation.*