Yesterday, after 4 years of being in Montana, I broke my falling on ice virginity. It was almost as traumatic as losing the other virginity... only less bruises this time (I kid).
I had a series of falling incidents in college where I would just be walking along, my ankle would twist, and next thing I knew, I would find myself on the floor while my friends walked on, not even noticing I was no longer next to them.
A slipping fall is much more traumatic, I think, because your brain has the time to register that you will be falling soon. It seems to happen almost in slow motion. The most damaging part for me, since I am well padded, is that it seems I pulled about every muscle in my body trying to recover my balance instead of just going with the fall.
That is why I think people should ALWAYS be drunk while walking on ice.