We all die, so we all kill

I'm pretty sure I understand the word kill.
Killing is an act of taking another's or your own life.
Killing is murder, suicide, and even accidents.
Killing is DEATH, itself.

I know all of this, yet I don't full understand why killing is shunned upon by our society.
I mean everyone says we shouldn't kill, but I don't think they realize we all kill.
That killing is apart of our everyday lives.
All year long we kill almost every type of animal:
Cows, Pigs, Horses, Rabbits, Foxes, Fishes, Mosquitos, Bees, Flies, Fruit flies, Frogs, Bears...
Shall I go on?

In our lives there was NEVER and most likely will NEVER be a person that can truthfully say the phrase, 'I have not killed'.
Because everyone of us are murders. We've all taken a life.
Now for sometime I've been wondering.
Why?
Why are we made to be murders?
I thought long and hard about this question and I've finally come to this conclusion:

We all live cause we all die,
we all die cause we all kill.

It's not something we can avoid, its just our fate.
Weather we take our own lives or we let another take it for us it all ends the same.
We all end up dying,
we all go down the same path.
Even though we call the people in prison that murdered our brethren 'Monsters'.
If that's the case aren't we all 'Monsters'.
We've all killed so we are all in JAIL.
Our jail is our LIFE our life is our JAIL.
We live waiting for our life sentences to end.

We all live cause we all die,
we all DIE, so we all KILL,
weather we like it or not that's just how it is.