No, it’s not stupid.
It is harder for us to understand since, because of original sin, we ourselves have a tendency to concupiscence, or evil. We have also had centuries of written and oral history, and currently decades of media overload, which have desensitized us.
Adam and Eve knew God in a way that we can only imagine. They lived in a paradise that we can only imagine.
And they freely chose to disobey the God whom they knew, not just as words in a book, or a ‘presence’ or a concept or a belief. . .the God they knew ‘face-to-face’ as loving Father. Knowing Him as they did, having had no experience of anything but good and perfect love, they wanted not only that, but to have even more–to be ‘like gods’ themselves.
It is such a incredible evil that, had we ourselves no knowledge of the story and were told it, we would be in shock. The incredible pride, the selfishness, the greed, the sheer chutzpah of two ‘creations’ thinking that they not only should be, but deserved to be, gods, and that the Being who had created them and given them everything was trying to ‘deny’ them their ‘rights’.
And even with this willful disobedience, which they tried to cover up, and to cast blame on each other and the serpent, God still had mercy. He could have annihilated them forever and it would have been perfectly just–a creator can do as he chooses with a creation, can display it or break it if it does not meet his specifications, and no one questions his right to do so.
And yet. . .God not only gave them the world, even though because of their sin the world itself became subject to evil. He gave them the chance for redemption. He gave them the opportunity to repent themselves and to choose to do good–and finally, even though they could never, never made amends of themselves for their sin, He sent His only Son who then made the amends for them–a perfect sacrifice in suffering and dying on a cross, and then by His resurrection making all humanity once again ‘saved’.
Imagine that you did something totally evil and wrong which deeply, even fatally wounded the son or daughter of the person you wronged. . . and imagine him not only forgiving you fully, even though you could never make amends or bring his child back to life–but also having another child of his be physically punished for your wrong even to the point of death. Now imagine all 7 billion people living now, and the countless people who have lived and died, and all those who will be born and die, doing the same evils to the same man, over and over and over, and each time he forgives and each time his child takes the punishment to death for every single person. . .
and you have a little idea of both the magnitude of The Fall that made such evil possible to humanity. . .
and the magnitude of mercy of the Father whose Son redeemed us.
Well stated Tantum Ergo!