> The only doctrine I believe anymore is that of original sin. I've spent too much time among humans to imagine there are any who aren't broken.

But your belief is that we are born broken, and not that it is the world that breaks us?

The world is us. Everyone here is the culmination of the same eons of evolution. Considering humanity to be somehow separate from the mess that humanity makes is a form of magical thinking.

And how is the world that it could break us? The world is made of broken men. We are born broken, that is, with a propensity toward sin.

That's just far too simplistic. Child abuse, mental illness, PTSD from traumatic experiences, traumatic brain injury, can all lead to impulsive erratic behaviors. Sin is also vague, and biblical sin is often completely disconnected from the actual cause of why someone is making poor choices.

The answer to nature vs nurture is epigenetics.