Yet Adam and Eve did not die on that day... instead, god ensures we ALL will eventually die as a consequence of Adam and Eve's sin? That's pretty unbalanced, lying about the outcome and then ensuring that people who had nothing to do with it are punished (or 'face the consequences').
they actually did die on the same day. They died spiritually because they were excommunicated from God....and they began to die physically. Adam was around 900 years old when he eventually died completely, and according to scripture, 1 day in Gods eyes is 1000 years... So, from Gods perspective, Adam died on the same Day.
That does not logically follow, one instance of disobedience is not the same as rejecting the legitimacy or authority of God, to suggest that is to suggest that God gave an incredibly exaggerated knee jerk reaction - viewing adam and eve's one use of free will against his own will to be an act of rebellion worthy of 'death' (as you put it) and then watched over humanity to ensure that even their descendants were punished (faced the consequences of the 'sin') and it took thousands and thousands of years for him to decide to forgive humanity because two people used their free will (which you claim He gave them) to decide to eat a peice of fruit - that is completely and utterly unreasonable by ANY measure.
in the way you've stated it, it would be unreasonable. But i think you are looking at it from your perspective only. If Adam and Eve were just like us, then it would be a knee jerk reaction on Gods part... but they were not like us.
They had perfect reasoning abilities, they had evidence of Gods involvement in their life. The man could talk with God, so there was absolutely no doubt in his mind that his creator was real. God communed with the man and woman in the garden so they had absolutely no reason to distrust him.
Not only that, but their mind was created in Gods image....so their consciences were perfectly in harmony with Gods conscience. For them to commit a wrong act would have taken incredible will power because they were not prone to doing wrong like we are. They were prone to doing good which means to disobey God would have really been going against the grain for them.
That is what made their actions so serious and that is why the death penalty was immediately imposed. They had no reason to disobey God, but they did so willfully which is no 'accident' or no simple 'mistake'... it is a deliberate and destructive way to behave.
Now look, I am not an anti-theist by any measure, however I would suggest to you that you may wish to examine your interpretation of the 'consequences' of the original sin, because the way that you have described it suggests that God punishes people completely disproportionately to the 'sin' (of choosing to use their free will in a way that does not match his own, perfect will), even to the point of punishing people who had nothing to do with it. If this is the sort of God you believe in that is fine, however I would suggest that most of the interpretations of the Abrahamic god that I have encountered do not paint such a picture - that of a petty tyrant.
the consequences were not passed on by God...they were passed on by Adam because Adam could no longer produce perfect offspring.
But on this point, Gods actions in allowing the man to procreate (even in this condition) was actually an act of tremendous love and fortitude on his part because he knew that life would not be good for Adams offspring. So why did he do it?
Because his mercy extended to the unborn offspring of Adam and Eve...Us. If Adam and Eve were not permitted to procreate, then we would never have been born. So you see, there is so much more to it and so much more to the complexity of Gods love and mercy then meets the eye.