Rider's Possession

Lately, I've been wondering why there are some who love to join in  motorcycle racing competitions when they knew the danger behind racing and the possible outcome if the competition would turn bad. Whenever I went to live competitions, I can't help but to think of accidents, injuries and death. I've seen lots of riders being thrown with their motorcycles outside the lane and I've witnessed how horrible their faces and bodies are due to the injuries that they've obtain. And then, I started to think why? I can't think of the answers. Just because you want to fulfill your interest, you are willing to face death.