This is probably the biggest Scam in the universe--Jehovah Himself is pulling off this kind of scam so He can control everyone. What He does it to create a problem where none actually existed, and then a "solution" that is going to cost much in the way of time and enjoyment of life. To make sure people fall in line, He distresses us continually so He can present "deliverance" from both that distress and the "original sin" that is about as real to me as the swine flu and man-made global warming. But, to benefit from that "deliverance", exclusive devotion to that Almighty Lowlife Scumbag is required.
Besides, I see not even a shred of evidence that Adam, as an individual, existed at all. I believe "Adam" is used to represent the whole human race. The real story reads "And mankind (all of them, not just one pair) was content with everything anyone doing being what Jehovah told them to. Now, Jehovah was planning on making a tyranny where mankind would slave for Him for some 30 non-fulfilling years, and then die of being used up. Upon realizing this, Satan saw the urgent need to stop Jehovah from executing this. Satan spoke in front of mankind about this, and now people were able to consciously think for themselves. Jehovah, upon seeing that people were no longer primed to fall for His tyranny, got pxxxed and pronounced harsh punishment on all mankind--the exact same harsh dictatorship and distress He always was going to have had for us."
In truth, no one has sinned until society (including religion) beats out the child in us. Once we stop dreaming, once we stop hoping to create a better world, we start settling for being cogs in the Establishment. Laziness, dishonesty, and envy set in, and once we are programmed by society and religion to view what is actually good as bad and what is actually bad as good, we become sinners--and it is extremely difficult to deprogram us once that happens (especially with society itself continuing to force us to settle for the Establishment).