You seem to be implying a mountain climber makes no gains by tackling Mt. Everest. The risk is not what is preferred, the sense of accomplishment and fulfillment is what is preferred. Without gains to be had, the mountain climber would cease to choose decreased lifespan unless they intrinsically enjoyed suffering.
or else your definition of gain is very limited.
You seem to be implying a mountain climber makes no gains by tackling Mt. Everest. The risk is not what is preferred, the sense of accomplishment and fulfillment is what is preferred. Without gains to be had, the mountain climber would cease to choose decreased lifespan unless they intrinsically enjoyed suffering.