Rather my view actually came from observing violence - between humans, but also in nature, and deeper still as a product of reality.
We exist in these fragile bags of flesh and bone. To a hungry lion we'd just be food.
And we behave the same - take for example the eating of meat. I'm a meat eater myself so this isn't anything preachy, but consider this - many animals are quite beautiful beings, possessed of their own personalities (we see it in our pets).
But that instrinsic value they have doesn't stop us from turning them into steaks.
On the one hand I wish you were right - I wish the world were beautiful and our souls along with it, and that I could sing that song.
But it doesn't always look that way. And worse still, I think it all started at the level of nature, not at the level of capitalism. We attribute too much significance to the human race when we lay such woes only at our own feet.