As a Catholic you’re saying man does have original sin. We are fallen creatures. But does that seem fair compared to Adam who didn’t have original sin. Why should we pay for his
transgression? Today’s courts would consider “blood guilt” as a form of archaic justice and would not allow it. Further, it goes against the idea of freedom and morality — that morality is based on the freedom of our choices, that we are responsible for our choices and not our forefathers.
Life is not fair, One plays the hand that is dealt. Each of us is different. We are not perfect. We have the opportunity to grow, be happy and be good or be defeated, be sad and blame others. The cup is half full or half empty. Attitude and God’s graces help us overcome our struggles.
All are born with original sin, except for Jesus Christ and the Blessed Mother. God gave us Baptism with graces and the forgiveness of original sin and personal sins at the time of Baptism.
Morality is based on good and evil which we choose freely. We have a conscience from God as a human being. We know right and wrong and we have a need to be good and happy.
I know what you are saying: we are born and is unfair in certain regards — some people are more blessed or lucky — but we shouldn’t point the finger at God. And somebody who does is sinning because he is not loving God at that point, or is accusing him of some injustice.
I’m sure God would forgive this person, but would the person forgive God for not playing fair? If you see a father give one of his children many gifts but give lesser gifts or no gifts to his other children, wouldn’t they feel that their father is unjust, is not playing fair, is playing favorites?
And if you say nature gives us all sorts of unequal gifts. Shouldn’t God correct nature? Nature too has fallen and should be corrected to show God’s bounty and equality among his children.