I really think we've hit on the reason snoring persists in the population. It's like the rattle on a rattlesnake. A way of saying, "Don't fuck with me", while you're asleep.Big fat male people[/url] are not ideal tiger food. They are dangerous when attacked; harder to kill, carry away, and cache; likely to be surrounded by other well-fed people practiced and armed for hunting large food animals.
Ideal tiger food would be three year old babies. If they are sleeping next to loudly snoring hunter/gatherers, maybe they are safer.