Why it is illegal to shoot & sell porn movies with 16 year old girls if age of sexual consent = 16?

same question goes for countries where age of sexual consent = 14 (e.g. Austria!) - why is it illegal to make porn movies with 14 year old girls and market this?
Answer:
Um.wow.

I always wanted to make my own website where I would simulate sexually assaulting young looking 18yr olds made up in pigtails and rollerskates, and I thought that I was a bit off for that...

but you apparently want to videotape yourself having sex with a 14yr old, and then sell that, huh?

You know, I recon that it was hypocrates who said that "in order to live a moral life, one must do more than required of you by society, and less than allowed." and this is a PERFECT example of that.

Legal or not, it's just not right.

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because you arn't trusted to make the choose to label yourself as a whore until you are eighteen...

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Why don't you just think about somthing else besides filming pornographic movies of underage girls! Disgusting!

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Because it is sick.

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Situation 1: 17 year old boy has sex with 16 year old girl. Good thing - no. Horrible enough that we want to criminally charge the boy and put him in jail, or even call him a criminal, probably not.

Situation 2: 17 year old boy has sex with 16 year old girl while being filmed by a 25 year old who places the vidio on the internet. 25 year old makes a profit. Thousands of people see it. Both the boy and girls family and friends find out about the vidio they are ostrized at school, their families are mortified. For the rest of both of their lives they are known as porn stars, preventing them from getting in meaningful relationships or serious jobs. Yeah, I think society has an interest in protecting the children from this.

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Age of consent (in a sexual context) refers to ability to consent to private sexual activity (privacy being a consitutionally protected with some exceptions).

Additionaly, filming and distributing said films is governed by different laws regarding consent to enter into contracts, etc.Completely different governmental interests.