@eobox91103 I see your point. However, I'd argue that when you consenting adults agree to send each other nudes, it's with the assumption that it's just between the two. The same way that when I consent to having sex with someone in real life, I'm not inviting others into it.
Also, given teenager's naivete, that is why rules and laws regarding teens and young adults exist (for e.g. drinking laws, statutory rape, coercion). They are malleable but also easy exploited. If we blame their naivete, that's treading very close waters into victim blaming.
But overall, I get your sentiment. Ultimately, I just don't want liabilities on the site and users. Remember, if you download these out of curiosity, then delete them straight away, the history is always there. You're immediately culpable, forever.