Evil stems from death, and vice versa. We didn't inherit Adam's sin, but the death brought about by his sin.
Death makes man keenly aware of his short time on earth, what he must struggle through just to live, what may keep him safe, what will distract him from his broken condition and escape into pleasure and false security. And when we seek these things, we also risk walking on others to attain them.
The man who fears for his safety ends up building walls, then forts, then weapons, then armies, then attacks outsiders and takes their stuff as well, all in the name of security and his fear that they will attack first. He fears death, and ends up sinning in order to avoid death.
The man who knows how short and pointless his life is could fall into pleasures to distract him. Hedonism, gluttony, and the like stream from this. And to top it off, he ends up abusing other fellow humans to attain this pleasure as well. Lust, adultery, rape, porn, and other predatory actions. While the glutton hordes and takes more than he should. All in the name of escaping his wretched condition of death.
And so on and so forth. Name a vice, and you'll eventually see that it's a delusion to escape from our mortality. Paul put it another way: "Money is the root of all evil." He was making a somewhat similar point about how insuring security and mobility (via money) ends up leading to all other kinds of evils. And ultimately, it streams from death. Which we inherited from Adam.
Maybe some would consider this unorthodox. I'm not sure. A lot of denominations of Christianity (via Augustine) conceive of "original sin" as some entity or force in it's own right. But I say it's the result of death. There is an original sin of Adam, but not in the sense where he is solely responsible for all of our sins. What we inherited from him was death. Our sins are our own.
And unlike the first Adam, the second Adam represents Life. Reverse everything I just said above when talking about Christ. It's a new nature - one that builds treasure in heaven. Sometimes the old nature ("Flesh") fights against it, because we live in these bodies where death is still a reality.
