As I have said before...sin is not man's problem, it is simply the result and consequence of the singular problem he has: he is conceived/born separated from God.
You are simply wrong! Sin is the problem and spiritual separation when conceived is the consequence. Sin brings death not death brings sin and death is SPIRITUAL SEPARATION. You need to learn the abc's again, that is if you have ever been taught the abc's of the fall and consequences of sin. The wages of SIN is death not the wages of death (spiritual separation) is sin! You have it backwards and your faulting intepretation of Romans 5:10-13 demonstrates your have it backwards.
BTW if you had continued to verse 14 you would have answered your own argument.
It is incorrect to say sin is part of the problem, because we see in the example of the aborted infant...there is no sin which is charged to that infants account.
We are all born into this world as infants Darrell and as sinners condemned "already" because the whole human nature existed and acted "in Adam" and when he sinned, the whole human race sinned and that is why infants don't need to be aborted in the womb to die, they can die of many of the same causes that adults die - "the wages of sin IS DEATH" not vice versa!! Paul says we have "ALL" sinned, not just adults?
Verses 13-14 prove that the death of infants and others who have no personal ability to discern right or wrong IN THEIR OWN LIFE TIME is due to their union with Adam and his act of sin in Genesis 2:17.
Genesis 2:17 is the universal law broken by all mankind "in Adam." There is no other universal law that could have been broken to cause death between Adam and Moses as the Law of Moses had not yet been given.
The law of conscience does not explain the death of all between Adam and Moses, because infants cannot violate that law as they have no ability to discern conscience and so that does not explain their subjection to death. The only law that explains the death concerning those who did not sin after the similitude of Adam's transgression, which was a WILLFUL KNOWING ACT of sin, is that the whole human nature acted when Adam acted.
Romans 5:15-19 proves this to be the case. Paul did not say it was by "many sins" that many die or many are condemned (which is your position) but by "ONE MAN"S SIN" many were made sinners, many were condemned because the whole human race existed in that one man and acted when that one man acted.
Like I said, you don't understand the basics of sin and spiritual death and therefore can't understand the basics of salvation (regeneration and justification).