Andrew
TS Contributor
I'm not denying that there are more sexual novels than Fifty Shades of Grey. There are plenty. I was more thinking that, due to the publicity that the novel in question as got, children would be more likely to pick it up.
If you go off my logic then yes, the Bible should be in the adult section.
But it's not as it's part of a religion and many people see it as fact and as what actually happened. (I'm agnostic by the way so I don't really believe most of the Bible). There would be uproar by Christianity if the Bible was placed in the adult section. 
If you go off my logic then yes, the Bible should be in the adult section.