Too many serious close-calls.
Check out the Commuting thread if you're serious about wanting to read other people's stories. What happens to recreational motorcyclists pales in comparison to those who ride the very next day after said "close call' just to experience another of the same.
"After reading through this thread I've come to the conclusion
that more people cruise the internet looking for reasons why
X bike won't work in Y scenario rather than actually riding
their motorcycles." -- RyanR