I'm also in the 'none of the above' camp. I like debating on here, because it's moderated well and I learn at least one new thing from most of the threads I read. My reaction to people who think certain topics should be banned is 'If you don't like the subject being discussed, don't read the thread'. It's that simple.
Why should other posters be silenced just because certain individuals aren't comfortable with the issue being addressed.
As Voltaire, considered one of the greatest minds in human history, said "I do not agree with what you have to say, but I'll defend to the death your right to say it."
That's the way it should be. Men have debated vigorously for millenia. The foundation of civilisation is built upon the ideas that have been formulated, discussed and improved upon over time.