Disturbing film and unsuitable roles for minors

Rating: 1/10 (24 September 2016)

The story is a mess and not very funny, but what surprised my husband and me were the 12-13 children in a film about a porn star and the parts they played. It was pretty sick. Why would any parent allow a child to be in a film about porn with nudity and sex and add to the sexuality of the film?
A female porn star supposedly dies and a prepubescent boy finds the naked woman. Later a young boy asks Crowe and Gosling if they'd like to see his big dick. It was creepy.
Gosling's 13 yr old daughter in the film goes to a party where naked women dance and swim in an aquarium and where the daughter is caught watching a porn film. The dad Gosling doesn't even care.
I'm not a prude, but this suggests child promiscuity. What is wrong with Hollywood to put out such a twisted perverted film.