Time to retire and say goodbye

Been thinking about another thread that has been running for the past couple weeks - Hooker Sensei's thing about changing direction.

I'm trying to remember anyone ever retiring from this art. Anyone. Not just quit, fade away, never come back, disolve into the mist, give up cause they're tired of nagging injuries - but really stand up and say they are retiring. Have a party, get a gold watch.

Does anyone know if this has ever happened and to whom?