Eh, maybe not. The policeman is not responsible for citizens being sensible, they're responsible for catching citizens who break laws.
There's no law against doing something real damn dumb, unless it's ALSO illegal for a different reason as well.
That’s a good point.
But then again, why is there a law against Christmas tree surfing in the first place? What if Christmas tree surfing just happens to be one of the sacred rituals of my particular brand of Christianity? Wouldn’t outlawing it be a violation of my rights under the 1st Amendment?
;-)