We thrive on taking risks and to a certain extent experiencing danger.

People enjoy mountain-climbing, skiing, parachute-jumping, running with the bulls and bungee-jumping because there is a certain amount of danger in them. It is not that these people wish to die; it is just that they receive an exhilarating feeling of facing danger and surviving. To a much lower extent we seek this sense of danger when we go on a roller coaster. People enjoy gambling because of an element of risk.

...

We thrive on taking risks and to a certain extent experiencing danger.

People enjoy mountain-climbing, skiing, parachute-jumping, running with the bulls and bungee-jumping because there is a certain amount of danger in them. It is not that these people wish to die; it is just that they receive an exhilarating feeling of facing danger and surviving. To a much lower extent we seek this sense of danger when we go on a roller coaster. People enjoy gambling because of an element of risk.

...