In addition to what James has said, one could debate over the assumption inherent in your question, that pornography is bad. For your information, Japan is not the only country with an AV industry. So it would be better if you rephrased the question this way: "Should pornography be banned?".

@Rokr: Clearly as you can see, this is the wrong place to seek opinions concerning such a topic. This is a section for questions concerning the Japanese language and its usage, not otherwise. Besides, the tone of your question implies a sense of moral superiority, which would surely get you rubbing someone’s fur the wrong way. If you are trying to address the “problem” and not Japan specifically, then why are you asking this question over here in this manner when this “problem” is not exclusive to Japan? That was exactly why I suggested you change the question to one which covers the pornography industry on a global scale instead, because that will not dilute the topic at hand and allows for a discussion more meaningful. For example, if I were to talk about human right violations, would it be fair if I targeted a certain country while blissfully ignoring the ones apparent in other places? Considering the fact that the PRC has outlawed all forms of pornography, wouldn’t it be inappropriate for you to request for and seek to obtain pornographic information and material on a public web community? Wouldn’t it get you into trouble? Frankly, I think you were simply curious and meant no ill will. But you need to understand the importance of asking the right questions at the right time and place. That is all I wish to say, hoped you’ve learned something from this. 很明顯的，這平台不適合談論此類型的問題。這裡是發問與解答有關日語與它的運用的地方，而非其它的。 況且，你這樣問問題的口氣顯然帶有點道德優越感，所以踢的鐵板自然多。若純粹是想討論‘問題’而並非針對日本，那爲何選擇這個平台問這個問題，尤其是當大家所知黃色市場非日本獨佔。 這也就是我之所以會建議你改寫你問問題的方式，改成以全球市場為主題的問題。因爲這能使話題的討論更有意思，而完全不會稀釋話題的可談性。假設我們談起違反人權的話題，卻只針對某某國家而忽略了其他國家，那公平嗎？ 据我所知你們政府不是已取締一切黃色作品？那你在這樣的一個公共場所跟別人尋求黃色作品與其資訊，會不會有點失當？會不會帶給你不必要的麻煩？ 坦白說，我覺得你只是純粹好奇而並非存有惡意或鬧事的意念。但你必須了解問問題的正確方式與怎麽選擇正確的場合與時機發問。想說的就這些，希望你從中得到了收穫。

I wrote this because I think this is very unpleasant and very ignorant and I don't want to bring anything like this for exchange. I thought I should announce this for you. here's many ppl seriously want to learn languages and try to be friends. and those kind of questions weakens it's effort. I don't want any reactions or comments from anybody about what I wrote here.

THT, you are completely correct! Japan is not the only country with an AV industry so the original question is coming across as an unnecessary attack on Japan, rather than as an attack on adult video. However, I fear that the poster does intend to attack Japan itself with this post. With your regard to your rephrased question: "Should pornography be banned?" ...the answer is, of course, no. Futhermore, I don't see what this subject has to do with languages.

Chinafan, there are 127 million people living in Japan. Do you really think they have all been involved in AV movies? Come on! This is a silly comment. And as for the Japanese AV industry being "sick", this probably says more about you than it does the AV industry. Just because you cannot understand something, it does not make it sick.