What about these OT verses?
Ps. 51:5 : Surely I was sinful at birth, sinful from the time my mother conceived me.
Job 14:1-4 : 1 "Man born of woman is of few days and full of trouble. 2 He springs up like a flower and withers away; like a fleeting shadow, he does not endure. 3 Do you fix your eye on such a one? Will you bring him before you for judgment? 4 Who can bring what is pure from the impure? No one!
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The consequences of our ancestral parents' sin is our mortality, because their sinning corrupted the nature God gave us. Falling away from God, man forgot God and could not on his own find his way back to God.
So, all throughout Romans, and in his other writings, whenever Paul refers to death, he means physical death, not spiritual death? Here is one of countless examples of Paul not commenting on spiritual death:
Rom. 5: 15-18 : 15 But the gift is not like the trespass. For if the many died by the trespass of the one man, how much more did God's grace and the gift that came by the grace of the one man, Jesus Christ, overflow to the many! 16 Again, the gift of God is not like the result of the one man's sin: The judgment followed one sin and brought condemnation, but the gift followed many trespasses and brought justification. 17 For if, by the trespass of the one man, death reigned through that one man, how much more will those who receive God's abundant provision of grace and of the gift of righteousness reign in life through the one man, Jesus Christ. 18 Consequently, just as the result of one trespass was condemnation for all men, so also the result of one act of righteousness was justification that brings life for all men.
Under your belief, then, "condemnation" means physical death, and Jesus came to exchange man's physical death for eternal life in heaven?
"The fathers shall not be put to death for the children, neither shall the children be put to death for the fathers: every man shall be put to death for his own sin." [Deut 24:16]
"The soul that sinneth, it shall die. The son shall not bear the iniquity of the father, neither shall the father bear the iniquity of the son...[Ez 18:20]