Tbf the Christians have got s***-loads wrong. Don't get me wrong, so too have the Muslims, Jews, Hindus and zoroastrians, but the Christians are the most numerous and dangerous so deserve the most criticism.
Havent we all got something wrong? At times, if not all the time? I suppose some are wronger than others, and some certainly cause more misery by insisting that their wrong is the ONLY right. Maybe its a case of needing to sort the wheat from the chaff.
I wouldnt put all Christians in one basket, there are certainly plenty of varieties. At the end of the day we are all individuals. As far as the Fall, and the moral sense, there is in the Eastern Orthodox way the idea of the O felix culpa....
"O happy fault that merited such and so great a Redeemer." The medieval theologian Thomas Aquinas cited this line when he explained how the principle that "God allows evils to happen in order to bring a greater good therefrom" underlies the causal relation between original sin and the Divine Redeemer's Incarnation, thus concluding that a higher state is not inhibited by sin. The Catholic saint Ambrose also speaks of the fortunate ruin of Adam in the Garden of Eden in that his sin brought more good to humanity than if he had stayed perfectly innocent. (Wikipedia)
This gives a different gloss on things.
Personally I see a lot to learn and reflect upon in much Christian thought concerning "right" and "wrong"; read much by Christians who value the moral sense. Its said that only "right" that is done "in Christ" is truly moral. This so, because the implication is that any such act (i.e. "in Christ" ) is born of a spontaneous freedom of will centred upon Grace and gratitude, rather than of any attempt at self-justification that will inevitable lead to judgement of others who do not measure up to our own standards. This insight - if such it is - is played out in various faiths.
I think GreatestIam shares with me the sad observation that the "fundamentalist" and "Biblical literalist" mindset ( a mindset not entirely absent from any of us) perverts such insights by mangling them with creeds and doctrines that distort any hope of doing anything other than divide people.