Tennis Fanatic: Now I know where the story "The Toynbee Convector" comes from.
What I like about so-called high risk activities is that I get to face something potentially deadly and work it out between me and Death. There are rewards, like the rush, the excitement, and to me the greatest reward is the sense of accomplishment, of having done something with life. People who don't do stuff aren't alive. Life is the capacity to do things.