In orthodox christianity there is no condemnation for what they call ancestral sin since the individual did not commit only a subsequent inherited tendency to sin, which not being sin itself is not condemned. The non condemned effect of the first sin on subsequent individuals is removed at Baptism.
Which is unjust because if you have been given a tendency to sin, that 100% of people fail to resist, then not sinning isn't a real choice, so being condemned for it and needing to seek forgiveness is not just and fair.
Back to making us sick and then demanding health.
In Catholicism and churches with an Augustinian view individuals are guilty of that Ancestral sin and share in the guilt of Adam's sin. Here that guilt of is removed at Baptism.
Being held guilty for sins you didn't commit is even more obviously unjust and unfair.
Post baptismal sin is the commission of the individual.
Baptism quite obviously doesn't remove the tendency to sin, so this is still unjust and unfair.
Those are I believe precise formulations for the apparent sinful nature although as with any formulation there can be debates on interpretation.
I have to say that the Augustinian formulation is a latter interpretation but there are those who argue that it is implicit in the bible.
Which brings us to another point which is that your god compounds its unjust, and unfair condemnation, with hiding its message (contemptible as it is) behind ambiguity, contradiction, and a total lack of actual evidence of its truth.
No Christian church though deny that Jesus life and death was effective for sin, the reality of which is accepted and central throughout Christianity.
So they all agree on the basic fact that we supposedly need forgiveness for being the way god made us.
As I said - it's a daft and silly story about a sadistic, unjust, and unfair god.