-There will always be at least one person who thinks all nudity is porn, no matter how artistic and tasteful. -There will always be at least one person who thinks all nudity is art, no matter how pornographic and vulgar.
I think the line is drawn at tastefulness. I always ask myself that If i had a child, would I have an issue with them seeing the image. I love nude art, but there's a fine line between porn and a nude art.
At first, I really though nudity was bad given that alot of biblical reasons by Adam of eve, but reading carefully and just by thinking about it, nudity is only wrong because its kind of the desires that people have about a human body. In a purposeful manner, a naked body had to be looked at when a doctor operates on a person, or when we study anatomy. So there, your nudity purpose is to not turn you one, but more to study the human body.
The thing is for religious reason is the control of not the model, but the one studying the nude model. Are you really studying the human body, or are you just thinking as for pleasure.
I find that you can't take a picture of the model in life drawing class. Im guess that some models, demand some respect of their body. Plus they are paid to sit there for hours.