Originally Posted by recursive
Well, everyone should probably sign their organ donor card, but I think you misunderstand Darwin's theory.
Natural selection does not work by appointing nanny-staters to dictate who they see fit to reproduce. It works by preventing those who are unfit to reproduce by killing them before they are able to do so. Therefore, unless headphone wearing causes a statistically significant increase in fatal accidents while riding, (of which I have never seen evidence) it's not a evolutionary selection pressure, and has nothing to do with Darwin's theory.
More than death affects evolutionary selection. If women dislike your using headphones when you should be listening to them it will affect your chances of reproduction almost as surely as death.