However, three people (fully human) have been brought into this world in immaculate fashion. Adam, Eve & Mary. 2/3 of them gravely sinned.
Now image a world where 2/3rd of the population gravely sins, but without growing old, sick, etc.
In today’s world, I believe that most sinners come to regret their sins as they age. Now image a world where gave sinners didn’t fear death at all…
Also, remember how many angels chose to follow the evil one when God gave them a choice. 1/3 of the angels followed the evil one.
This is a really good point. It may be that had God continued to conceive all of us immaculate (and thus perfect in our bodies at the start), it may be that the success rate of choosing Good over Evil would be lower than it is now. Though conceived and born immaculate, it may be that like Adam and Eve (and a large number of angels), we might have become consumed by the prideful desire to be even greater than we were born. Being impatient for the blessings that would come after our final sleep into the Beatific Vision, many of us might strive to discover and know the secrets that evil has to offer: to become “greater” than our neighbor - maybe going so far as to doing evil in the hopes of becoming “greater than God”, if that were even feasibly possible.
And knowing our fallibility, several immaculately conceived humans might have chosen even more evil than what Adam and Eve had chosen. Adam and Eve’s sin may have just been the kickoff of a far more wicked dystopia had God decided not to allow us to be burdened with the handicaps of this world.
In light of that, Adam and Eve’s loss of paradise may not have been so much an extreme punishment to the rest of humanity - but a way of buffering humanity from a greater loss of souls.
Simply put - being born immaculate, with the ultimate silver spoon in our mouths, for may have spoiled many of us.
In other words - the weaknesses that handicap us (so well displayed in the lives of the characters of Scripture and in a particular way in the lives of the apostles as they struggled through their conversions) can give us a perspective and a disgust of evil that humbles us.
Metaphorically - maybe it is better that we are born handicapped as stupid, half-blind but generally loving dogs (and Peter pops to mind here) - constantly distracted by our appetites - than beautiful perfect humans succumbing to the prideful desire to know things like God knows and to be powerful like Him in our lives on earth.
Carrying that metaphor further, that doesn’t mean that dogs can’t become vicious, frightening dogs (and many do), but it may mean that a greater number of dogs will cling to God’s Mercy and choose to love God than had we been born immaculate into a paradise that was really a dystopia.
The nice thing is that we can hold onto the promise that if we become good, obedient and, most importantly, loving dogs enduring patiently and kindly all the trials put before us in life, following the examples of Mary and Jesus, God will raise us up to be better than we are in this lifetime - possibly going so far as to relieve us of some of our own canine-like appetites and handicaps.
