Moral development now. So we are developing into a morally superior species than the one God breathed life into? Made in his own image no less.
This is not a regression in science. It is an illustration of how some ignore the scientific method, in order to promote there own agenda. The various examples of the religious, using pseudo science to re-enforce belief in Biblical events, comes to mind.
That free will thing, is the one Abrahamic God believers always fall back on, to explain why Adam and Eve, although created perfect, sinned. The obvious answer to this is, why was there free will decision wanting, if they had perfect reasoning ability? Never did get a reasonable answer to this one.
Oh hang on! ..... You believe we are morally developing still. Could it be that in some time in the future we will be morally developed to a stage that we don't need the "Jesus died on a cross for our sins" for heavenly admission?
Can you see how you tie yourself in knots trying to apply reason to religious belief?
Of course we're developing - don't you believe in evolution?
Original sin is referred to as a "blessed fault" in some contexts (thinking of a particular prayer sometime during the Easter Triduum, Holy Thursday through Easter) because it was because of original sin that Jesus became incarnate. Also, not necessary (from Catholic perspective) to believe there was an actual literal Adam and Eve, the central message is about humanity through its arrogance separating itself from God. But even if one believed in a literal Adam and Eve, as some/many do, humanity was created "good", not "perfect". Being created in the image and likeness of God has, as I've been taught, more to do with having the capacity to be in relationship with God in a way that other parts of creation like plants and animals can't be.
There are many things to criticize Catholics about, or Christians or many religious generally. But you seem to be confusing Catholics with Evangelicals (re creationism and pseudo-science etc.).