An interesting thought occurred to me the other day, so let me wax philosophical for a moment and propose a question: where did morals come from?
Nowadays, unless you're a sociopath, if you stab someone and loot their corpse, you'd probably think "that wasn't a very nice thing to do." But if you were an archer in the battle of Agincourt, after the battle had finished you'd want to get your arrows back. They were expensive. You had peasantlings to feed. No one blames you for it.

Anyway,

My point is, when did we decide that something was 'good' or 'bad'? I can understand how we formulate our laws and morals today, a lot of that has to do with how your parents raised you, and how they were raised as a child (etcetera ad infinitum). But somewhere along the line, those morals had to have been formed, so what did it?

God? An instinctual -hard wired- conscience? The guy in charge at the time?