I remember watching an excellent old documentary about Joey Dunlop, how he kept defying the odds coming back from injury and winning. If my memory is right, his last race he was a bit upset about death of his friend and not in good state of mind to be racing?
The word fearless is often overused but with these TT racers it's very apt. I get chills just watching the footage. I don't think these guys get enough credit.
An friend at uni used to race bikes, used to love telling me his catalogue of injuries!