I've been in a few accidents - all the result of careless drivers not looking for bikers- my father was seriously injured in one on a seperate bike at the same time. I don't always agree with the adage "not if, but when" but 90% of the bikers I know have been down. Some more than once. If it is going to happen, it is going to happen. You can't let it bother you - the good defiently outweighs the bad - just gotta try to keep the rubber side down.

I hope your friend pulls through and gets back on the bike. He'll be thought of.