Oh Man...as the Joker said..."Why so serious?".
It all Starts when We are Young. Psychologist generally Say that Our Personalities are, for the most part, Formed in the Beginning Years. The Complexity of the Human Condition takes so many varied Forms that Occasionally it Produces Monsters of all sorts.
Freedom of Expression allows Us to explore and expose these Aberrations for Education and Entertainment purposes. So, there is a Place for the Data no matter how Horrifying. But most who watch this Movie, Arguably, are doing so for some kind of Horror Movie Thrill. Good luck.
The Film is presented in such a Serious, Deep Deconstruction and is so well done that the Entertainment Value is Vacant and what We are left with is Guilt for Watching, and Sympathy for the Maladjusted Men who are Convinced in that the only way to show a Connection with Humanity is through an Exchange of Material Matter with Sexual Perversion of the most Extreme.
As these Carnivores Consume and Consummate their Love it proves to Them that this is the Ultimate Love. But, this places Them in the Unnatural Selection of the Specie...Categorically...Inhuman.
If Your Party or Gathering is Over and You have Unwanted Lingering Guests. Put this Movie on and it is Guaranteed to Clear the Room. If it does not, go to the Kitchen and start Frying up some Meat. If the Guests are still there...Dial 911. But I Digest...I mean Digress.