Following up my previous post, I think what I got from those experiences is how fragile we are. We break easily. And inevitably, we do end. The end is sometimes violent, and even when it is violent, it is also often perfunctory. The first two corpses I ever saw had essentially been thrown out of a car like litter.
I was a cynical and negative guy before I saw any of this, but the experience probably helped reinforce my thinking.