I just read the plot summary of this on Wikipedia.
Within the last ten years or so, a lot of mainstream movies have popped up where I look at the plot and think to myself "What kind of f__ked up, dysfunctional society would result in a movie like that?" This movie is near the top of the list. There have always been some weird, out-there movies on the Cult fringe, but only in the last decade or so have we gotten twisted enough as a society that these are getting mainstream releases.
Edit: I just watched the trailer. https://www.youtube.com/watch?v=3hQpV9Q0A7E
SPOILER ALERT:
The guys kills women and has reciprocal light-hearted, comedic conversations with their severed heads that he keeps in the fridge. This movie is definitely a symptom of some greater depravity or sickness in the public mentality. It's like someone made a sitcom about Ted Bundy.