Sam Harris, in his recent article called The Fireplace Delusion, tries to make you feel what it's like to react to a cached belief being irreparably destroyed. Just incase you forgot what your apostasy (if you had one, of course) was like in its early stages.
What are some of the Fireplace Delusions you've come across in your days?
EDIT: WOODSMOKE HEALTH EFFECTS
My family has burned wood in the fireplace almost every day in the winter for a decade now, so I would say I have more of an attachment to fireplaces than most. I still didn't feel any jerk reaction to being told that fireplaces are bad, though.
I have to say that "Smoke is dangerous" is only true if you're inhaling it. As anyone who's actually burned something in a fireplace knows, there's a strong airflow generated, that sucks in air from the room, and sends it up the chimney with all/most of the smoke. That is, our homes don't fill up with smoke when the fireplace is lit. Our family uses a heat exchanger to bring heat into the room without bringing smoke into the room.
On the other hand, I read this passage from the article: "These findings imply that even woodstoves and fireplaces operating well that vent most smoke outside may produce sub- stantial exposures through penetration back into the house, a characteristic of “neighborhood pollution.”
So fireplaces might not hurt me very much, but they have a tragedy-of-the-commons effect. Since my family lives in a remote area, perhaps we can go on burning wood in our fireplace to our pleasure.