Humans are very emotional beings, and feel things much more strongly than most other creatures. Sometimes, they feel things a little too strongly.
I have never been happy with the way that magical constructs were presented in games. Admittedly, a large statue stomping the surrounding countryside is an impressive image. But the logic (or lack thereof) involved has always bothered me.
The devil's wind. Explains why people become crazy. They are caught up in this wind which steals their sanity which in turn feeds the wind. The wind is a leftover from when the air elementals banded together in a mass army at one point to attack the True Gods. The wind is leftover of their attack route and on the anniversary of the battle the wind sweeps through causing the madness.