Young, and dead motorcyclists. Young male motorcyclist is the definition of testosterone-fueled lethality. (I grew out of sportbikes after two good friends died.)
I'm sorry about your friends. My dad has lost at least one, been hit no fewer than 5 times (none his fault), and gone down one other time (lowsided at Deal's Gap). Miraculously he is still alive. This post probably makes him sound much more reckless than he really is. He is the most cautious person I know, probably due to these experiences.