Rom 3:23-24 for all have sinned and fall short of the glory of God, and are justified by his grace as a gift, through the redemption that is in Christ Jesus,
Romans 5:15 But the free gift is not like the trespass. For if many died through one man's trespass, much more have the grace of God and the free gift by the grace of that one man Jesus Christ abounded for many.
Romans 5:19 For as by the one man's disobedience the many were made sinners, so by the one man's obedience the many will be made righteous.
It's dangerous to build a theology around one or two verses.
If Jesus was not born of human sperm was he born of human egg? Did the HS implant Mary’s egg or was Jesus born totally virginal, without sperm or egg?
I don't build a theology around one or two verses, nor do I approach scripture with a theological prejudice.
If the Romans 5 verses you cite teach universal inherited sinfulness, then they also teach universal salvation, and you don't believe that. If, however, they teach that those who follow the way of Adam die and those who subscribe to the way of Christ live.
Rom 3: All have sinned! Look at it; it's a verb...sinned. The all being addressed did it: sinned. Are you claiming that all unborn humans commit sin? Maybe they lust and just cannot verbalize it.
Silliness aside, of course Paul's argument in the first chapters of Romans is that Jews and Gentiles need a savior alike. And here he quotes the Psalmist that God looks down on the earth and see that everyone "turns aside," "deceives with their tongue," curse with their mouth," etc. Now think about it...do you really think what's under consideration here is unborn babies doing all these things? Or do you think it more reasonable to understanding that what's being talked about is those who DO THOSE THINGS LISTED?
Sin is lawlessness (1John 3:4), not a genetic disease.
I noticed you didn't address the passages I posted, as I did yours - you just posted others and claim they disagree.