As long as there is a demand for those novels (people are willing to buy it and have the money to), they should not be banned. Because banning them will mean big titles like Harry Potter and businesses to be bankrupt, which is simply not acceptable. As long as something has a perceived value in the eyes of people, it should go on. Some will consider it unethical or unrealistic, but thats what the people want. Its up to them if they want to purchase it or not. Take an example, FIFA world cup is unnecessary if viewed on a strict perspective. It does not help to eradicate poverty or tackle any serious issue. So, how many of you agree that it should be banned?
And pornographic websites and materials are alright, given that the website or DVD prints an age warning over it. After all, the reason behind this is defined already above, the perceived value of something. If it is legal in a country, why ban it and destroy potential? We even have debates on what should be considered pornographic! Some would say the image of a girl wearing a decent short skirt is pornographic (even models wearing short dresses!). And for others, only nude pictures are considered pornographic. But this is NOT to say that child pornography is okay.
