My most serious crash on my carbon Aegis Swift fractured my pelvis from my right ilium to my sacrum, as well as sit bone fractures. My pelvis by far took the brunt of the fall and actually protected the bike from hitting the road with strong force. The bar tape had a small gouge, and the right brifter was turned in a bit - an easy fix. The frame itself was absolutely fine, no harm done at all (I did have it checked out by a good LBS).

In this case, I would have happily sacrificed the frame rather than my bones -- sometimes, breaking a frame is better than the alternative!