It’s easy for an old man to look back and see the obvious, how wasted youth and health and safety are on the young who spurn such things, to be dismayed by the risks you took, but as a youth you do sense that life renders you powerless by dragging you back to it, breath upon breath upon breath in an endless capitulation to biological routine, and that the human will to control is as much about asserting power over your own body as exercising it on others.