Personally the whole Fritzl thing is completely repulsive to me as a parent. One of the ways many people cope knowing what we do is to laugh in the face of adversity. It's the best way many nurses on A&E departments cope. It's got nothing to do with trying to upset people, it's got everyting to do with enabling them to move on and help the next patient. I couldn't cope with some of the stuff my missus has had to cope with working in SCBU and more recently as a special needs teacher. Just too upsetting.
Laughter sometimes is the best medicine, it doesn't cure all ills though. That much is obvious.