For whatever reasons an author depicts what he does, is is not his responsibility to ensure people do not get offended or encouraged any more than Gaspar Noé is responsible for ppl being raped in underpasses.

What is offensive or erotic is in the eye of the beholder. A story could be written that denounces the fundamental tenements of a religion (whatever religion) and i guarrantee more people will be offended than by a story depicting snuff or ped.. i doubt there will ever be a religious or politically sensitive code. However, there are codes for snuff and ped etc.. and as long as they are used accordingly there should be no cause for concearn.. should there?

Personally I write my stories as I do because I want to create the most horrific, visceral and unnerving body of words that it is in my ability to create. If I was to excuse myself of these thoughts, I would simply blame my Id for regularly bypasing my ego and super ego