Bbenjammin makes so many good points in his past posts.
I also agree that skinning a live animal is barbaric and not necessary. I've been hunting for many years and my dad always taught me to respect the animals I was hunting. You don't want them to suffer needlessly.
Lobster... well... that is another story... How many people would/would not be able to drop a live lobster in a boiling pot of water?
I really think that in a survival situation, you dig really far down and do things that you wouldn't normally think you could. What would you do to keep yourself alive for your children, family, friends, what-have-you.
If I was with my family in a survival situation and something happened to them and they died, what would I do... Well, eating them wouldn't be my first choice, that is for sure. Obviously you would try to source food in other ways. In the most extreme conditions, no food available, it has been a LONG time since I had anything to eat, possibly I would turn to cannibalism... It really would go down to your core beliefs at this point:
1) Do I no longer have the will to survive since my loved ones are gone.
2) Would my loved ones want me to survive and go on?
Hard questions indeed.
As far as killing other animals, that seems a cake walk compared to the above.
As they say, survival is definitely a state of mind... You either want to survive, or you do not. There is no middle ground.
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"I reject your reality and substitute my own..." - Adam Savage / Mythbusters