The only reason porn is so popular for much people is because its something we can't have.
The curiosity makes us want to see the person naked, and it arouses people because of the finding of what we wanted.
If men, women, and children walked around naked all the time, then people wouldn't care much about a women's tit, or a man's dick. It would be just like seeing a persons face, or arm, or leg, it would just be normal.
And I think kids should be allowed to see porn, if it is them who wants to see it.
You shouldn't force porn on kids though, because it could make them feel uncomfortable.
Porn is probably the reason why Teenagers these days get pregnate so badly.
Almost every year around 10,000 Teenagers in America get pregnate and have a kid. But the way I was told, that the US Goverment MIGHT shut down porn to see if it is the reason of Teenage pregnace
I think you could argue that the vag or dick wouldnt be just like an arm or a leg since its to do with sex and arousal