Animals are meant to kill other animals in a natural and normal fashion- hunting with only the weapons their body has been outfitted with. I have no problem whatsoever with that. Likewise, if a human goes out hunting, even with additional weapons, and eats what they hunt, I don't have a problem with that. I wouldn't do it myself in a non-extreme situation, but I don't judge others for it. I don't feel 'left out' in the slightest because it is both my choice and what is healthiest for me.
It is people that buy shrink-wrapped packages of beef from the grocery store that I have a problem with. There is nothing natural or normal about it, never-mind all the issues with animals being abused during their lives up until the time they are slaughtered. In my opinion, this is not right. Since I live in a modern country with good access to vegan foods, I see no reason to personally participate in that.
If I was stranded on an island without anything to eat but animals (unlikely!) I would die without access to medicine and metabolic formula (food made without a certain 'aspect' of protein which I cannot process), so it would not be worth eating meat and decreasing my level of mental function and ability to try to get off of the island to temporarily fill a need, hunger.
That said, in the imaginary world where eating meat in any significant amounts would not make me sick, yes, I would probably eat it. As was said, that is survival instinct.