morality is subjective and people don't have free will

[Amarok]

I may not be able to say I've never done wrong, but I can say I've never sinned. Not once, ever.

Sin is simply the religious term used for an act that is wrong. If we both agree that no person is perfectly good, we have more in common than you'd think. Regardless of whether i call it original sin or not.

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let's correct this statement

That's it's a fact we all can act in ways that are against values . That neither entails sin . Nor is the imperfection of human moral reasoning

Again, this is just a difference in semantics and terminology. When we get down to it, the fact is we agree on the basic principle here.

No I fear we don't