Stress
One would think. However, it isn't you doing all this insane nonsense, it's people who actually enjoy and get off on doing it. When risk-taking is your friend, the risks themselves become not-so-stressful. You'll probably be more stressed out looking for work all the time. This might sound ridiculous, but just wait until you get out into the real world. You may find that you'd prefer to leap through a ring of fire than miss a car payment.