Aquinas was not only more philosophical, he was also seriously, painfully dull in volumes thick enough to beat someone to death with.
It appears that we do agree that there is an inherited condition which leads to a propensity to sin (be it physical depravity, metaphysical sin, or what other label you like). I don't state that it's a direct causative, but I do argue that it's a coersive force, and that deviation from the original, Adamic condition is not an effect of moral choice and sin, nor are the associated mortal pains and sufferings. If it were, then the offer of redemption and absolution would be magnanimous. Yes, there is significant pain in the world caused through moral sin, and I fully agree that the responsibility for that is on our own heads. But I cannot rationally agree with the offer of absolution to clear myself of the stain of a sin that I did not get to enjoy.