Okay, just a scenario...
you are in a forest, living off the fruit of the land.
a bear comes along, beautiful black markings.
you have a gun just in case for saftey...
the bear attacks you because HE wants to eat YOU
do you spare his life?
Being a vegetarian is a decision, but I find it an odd one if it's because of cruelty to animals.
I know many animals that would not think TWICE, even ONCE to eat you.
It's the circle of life, just watch the Lion King for crying out loud!
=D Don't be offended I was only kidding around.