Original sin is, among oter things, physical death. We were not made to die originally, but the sin of Adam corrupted our nature. This is the wound. It delivers physical death, but it does not deliver spiritual death. Spiritual death comes about when one rejects the Kingdom of Heaven by committing an actual sin, a sin of the will, and fails to confess it.
I sent you a private reply of this by mistake. I only meant to reply publicly. Am I answering the question? I'll be happy to elaborate if I can.
Thanks, Annalex. "If" I am reading you correctly, the fall of Adam is not related to why we commit day-to-day sins today. If so, let's suppose that in the history of the world, there have been 8 billion people. If it is not Adam's fall, what is the reason that the current sin scorecard is 8 billion (minus 1 :) to one?