I was reading a new article about pornography on the official Watchtower web site at
http://www.watchtower.org/library/g/2002/7/8a/article_01.htm
and it closes with this statement: "It undermines efforts to do good and have a clean conscience."
But what if pornography did not offend your conscience, would your conscience still be clean? Surely that is the whole point about conscience, it tells you what is right and wrong, and if it's not wrong in your book, you have a clean conscience? It may be the role of many churches to try to mold peoples consciences but at the end of the day, to say don't do something because it will offend the conscience we gave you is not in itself a good reason on it's own merits.