+1
I've always felt sex is a kind of sacred thing (these days not so much, sadly). When I was younger I would not like to see any sex scenes with family or friends. It felt icky. Also, sex is when people are their most vulnerable. Everyone an probably relate to that feeling of being overwhelmed with passion, desire, or nerves when engaging in the act of sex. It can also be an addiction, and a drug.
I think when you mix something like sex with violence, you can overload some people's nervous system,/ Maybe not with just one film, but over time, there can be an effect..it can wear you down if you don't stay healthy about your outlook on sex.
Back to sex being a sacred and very private thing. It's a romantic gesture, and not very easily preserved, especially now where it's seemingly been brought out in pop culture as this accessory type of thing instead of a real bond between lovers.