I've had my wrist road ID for about two years, when started to ride the road more and more. The thing that really got me to get one is that if I get hit by a car (knock on wood), I might get seperated from my bike, where I would normally carry my ID. If my ID and emergency contact info is on me where the EMTs would see it, m family can be contacted sooner and I can be ID'd sooner as well.