My thought on it is that all of the things you mention are dangerous, so there is no good way to argue against the danger. You can get hurt rock climbing, and you can get hurt sailing, even die, it happens. I think it is best to just face that head on and not try to argue against it when people say it is dangerous, fine, it is dangerous, but we keep sailing anyway.
Originally Posted by Lawrence of Arabia
Lawrence: // puts out a match with his fingers //
Hartley: You'll do that once too often; it's only flesh and blood!
Lawrence: Michael George Hartley; you're a philosopher.
Hartley: And you're balmy!
Potter: // tries to put out a match with his fingers, burning himself //
Potter: Ow! It damn well hurts!
Lawrence: Certainly, it hurts!
Potter: Well, what's the trick then ?
Lawrence: The trick, William Potter, is not minding that it hurts.