Mark Zuckerberg only eats what he kills
mashable.com
mashable.com
Eating only what you kill doesn't seem to promote a healthier lifestyle per se; you're still in civilization and you didn't have to trek all over creation to hunt the food yourself, so you get no exercise and very little satisfaction. It sounds like you just show up and kill the food.
Presumably the meat is super-fresh, however, since it's cooked immediately after it's killed. If you kill the food yourself, you know exactly how fresh it is. But really, can't you just trust that the food was freshly killed? Why do you have to do it yourself? And is eating freshly killed meat that much better than eating killed-and-then-chilled meat?
Whatever the motivations are, this behavior will appear to the public to be somewhat psychopathic.
I think when you have wealth without bounds the philosophical debates you have with yourself that usually end with "well, I just can't afford to that sort of experiment" no longer end that way.