Why Is AC/Libertarianism So Bothersome?

[Coffee]

I mostly lurk on this board, and occasionally post. I have one question, though:

Why is it true that there are consistently threads regarding aspects of AC or libertarianism? Why do either of these ideologies arouse so much discomfort as to be put to the test at all times?

I don't know...it just feels like there should be an AC/Libertarian FAQ to head some of the clutter off at the pass.