A pretty high percentage of military fatalities are from personal vehicle accidents (at least 60-70% IIRC) and a good chunk of those are crotch rockets.
Sadly, we have a bunch of kids that we teach to be "invincible", give them oodles of money, and expect them to be responsible with their new toys.
Granted, we have frequent safety training and inspections and extra PPE requirements, but when was the last time you tried to bang something into a 19-year-olds head when all he's thinking about is going really and how hot the girls will think he is on his shiny new Gixxer?
Even worse when they can hit the Autobahn and they've only ever been taught (sort of) to drive 55.