By his sin Adam, as the first man, lost the original holiness and justice he had received from God, not only for himself but for all human beings. Adam and Eve transmitted to their descendants human nature wounded by their own first sin and hence deprived of original holiness and justice; this deprivation is called "original sin". As a result of original sin, human nature is weakened in its powers, subject to ignorance, suffering and the domination of death, and inclined to sin (this inclination is called "concupiscence"). Catechism of the Catholic Church, 416-418
The thought that one person, thousands of years ago, defying God resulting in the punishment of all, throws off my Internal Sense of Justice. Of course, my research (wikipedia) leads me to the Book of Dicipline of the Methodist Church, which says:
Original sin standeth not in the following of Adam (as the Pelagians do vainly talk), but it is the corruption of the nature of every man, that naturally is engendered of the offspring of Adam, whereby man is very far gone from original righteousness, and of his own nature inclined to evil, and that continually.
At least this doesn't carry with it the insinuation that one need not do evil to be a sinner; rather, it states humans are naturally inclined towards evil due to their nature. Perhaps this is true - there has been enough evil in the world to justify this hypothesis. Surely Wesley would believe that while people may be inherently evil, by following God/Jesus they're set right. (Methodism also doesn't hold Predestination, another concept which throws off my ISJ).
I think I've stated this before, but I just don't think that people are inherently evil. Perhaps this is why I have such a problem with this.
Maybe more thoughts later.