What is eroticism (Part 1)

"I came to know God experientially, from being fucked in the ass—over and over and over again." (Toni Bentley, The Surrender: An Erotic Memoir)  

Eroticism is a way of seeing.

Eroticism is the ability to reflect your individual/social values in what you feel when you are aroused.
Eroticism is the state about which an observer can pose questions and find answers about excitement (arousal).
Eroticism is potentiality, where you can find responses to sexual instinct, before physical sex.
Putting questions determines the way one conceives sexual attraction. It determines the “Who I am” in sex. A sort of free will in the capacity of getting aroused.
Eroticism is all the same for each observer?
Eroticism is not the same for everybody because it depends on your responses “Yes”, “No” regarding getting aroused.
There is a misunderstanding, so that eroticism is intended like creativity. Eroticism is creativity in terms of being able in getting responses from instinct, about what arouses you. In doing this, you are linked to all the answers you gave yourself before, in the past (narrative).
Eroticism is pleasure, pleasure to be aroused. Pleasure that comes from the possibility you have to find responses to your instinct, before unleashing it.
Eroticism is a nonlocality-desire. You can have desire for something (you already have) and desire for something else (you don’t have yet). You can desire multiple things at the same time. Or, in other words, you yearn for the possibility to have (all) them.
Eroticism is a form of awareness. Eroticism distances the human mind from mere animal awareness.
Eroticism is a central factor in the process of hominization. This process is the ground for questioning. The ground is nature, inner and outer, which provides a personal way of seeing (awareness).

Is eroticism a cultural drive?
 
Eroticism manages information in patterns that create libidinous images based on individual sexual instinct(s).

“Bliss, I learned from being sodomized, is an experience of eternity in a moment of real time.”(Toni Bentley, The Surrender: An Erotic Memoir)
Among animals sexuality is a primary urge serving procreation. Humans, on the other hand, have a sexual life through visualizing sexuality following the view of their social/individual experiences (narrative-interference). The cultural drive (narrative-interference) determines the characteristic reactions to sexual stimuli in any and every situation in life.

Eroticism as holographic obsession.
 
Sometimes eroticism can take on the holographic force of sadistic obsession, as in Junichiro Tanizaki:

Deep in his heart the young tattooer concealed a secret pleasure, and a secret desire. His pleasure lay in the agony men felt as he drove his needles into them, torturing their swollen, blood-red flesh; and the louder they groaned, the keener was Seikichi's strange delight. Shading and vermilioning—these are said to be especially painful—were the techniques he most enjoyed. (The Tattoer)