Humans are a peculiar species.
Considering how feeble-minded and inherently fragile we are, it's a miracle we even exist at all. For an animal with such a large brain, you'd think there would be fewer stupid internet challenges, Nigerian prince scams, and accidental deaths, but in true homo sapiens style, somehow we squeezed through the evolutionary process.
Since we've made it through famine, drought, war, and disease, we may as well have a little fun. As the circle of life dictates, the strongest will prevail and the weakest will be used as entertainment.