Every living thing on this planet survives by killing off some other living thing ,whether its :
The animal kingdom ,animals prey on other animals ,and fish
Bird life ,birds prey on other birds and fish
Marine life preys on other marine life.
The insect world preys on other insects , and even some plants prey on insects.
Humans prey on just about every living thing to survive including all of the above .
And all of the above takes place while the "victim" is alive and fighting for its life and its own survival.
JW`s bury their head in the sand when it comes to coming to terms with how nature works.