I think we need to make a distinction between suffering as a result of someone else's sin and being punished for someone else's sin, but I do understand what you're getting at. It's an interesting question. Can you flesh out what the problem is from the Jewish perspective?
It seems to me as if, looking at Genesis 3, the consequences suffered by Adam and Eve extended to all humanity--because at the time, Adam and Eve were the only two humans in existence. And if Adam and Eve suffered a change in their state of being as a result of their sin, then would this altered human experience not be passed onto us?
That's the thing: the "consequences" suffered by Adam and Eve are not spiritual, they simply represent the physical hardships of life in the non-Edenic world. The only "change of state" Adam and Eve suffered was their displacement from Eden into the regular world.
Remember that for Jews, sin is not a condition, it is an action.
Our concept of sin is oriented around our conception of justice, since for us, a sin is a transgression of the laws of the Torah. In Deuteronomy 24, it says
לא יומתו אבות על בנים ובנים לא יומתו על אבות איש בחטאו יומתו׃, which is to say
You shall not execute parents for the acts of their children, nor children shall you execute for the acts of their parents: a person shall be executed only for his own sin. And as the Rabbis teach us, this is obviously not referring only to capital punishment, but any kind of culpability. And if this is the standard to which we must be held, how could it be possible that God be held to a lower standard. The standard objection to this line of thought is Exodus 34:6-7
ויעבר ה' על פניו ויקרא ה' ה' אל רחום וחנון ארך אפים ורב חסד ואמת׃ נצר חסד לאלפים נשא עון ופשע וחטאה ונקה לא ינקה פקד עון אבות על בנים ועל בני בנים על שלשים ועל רבעים׃
And YHVH passed before him, crying out: YHVH, YHVH, a God gracious and compassionate, slow to anger, full of lovingkindness and faithfulness, giving forth lovingkindness to the thousandth remove, forgiving sin and fault and transgression, but surely not clearing them altogether, remembering the sins of parents upon children and on children's children to the third and fourth remove.
The Rabbis explain to us that this must be punctuated slightly differently, to read
And YHVH passed before him, crying out: YHVH, YHVH, a God gracious and compassionate, slow to anger, full of lovingkindness and faithfulness, giving forth lovingkindness to the thousandth remove, forgiving sin and fault and transgression, to clear them altogether; yet not clearing altogther but rather remembering the sins of parents upon children and on children's children to the third and fourth remove. Which is to say that God always forgives the sins of any who commit sins and then do
teshuvah. However, when a parent teaches their child to sin, and that child does not reject the teaching, but instead, of their own thought and volition embraces the doing of the same sin which their parent has taught them to do, they are judged commensurately more severely, since they should have known better, seeing the evil that their parent did. Yet even such children, if they abjure the sins taught them by their parents, and do not repeat those same actions, or, having done them, do
teshuvah, they are also forgiven.
As for Adam and Eve, we are taught that they had the same free will, the same ability to transgress as any human beings-- if they did not, they would never have thought to disobey God or eat the fruit. So nothing has changed about human nature from them to us. Being cast out of Eden was a consequence of their behavior, and the "curses" that accompanied it no more than describe life in this world. But those consequences have nothing to do with whether God would have or did forgive them. Some of our midrashim say that Adam and Eve did
teshuvah, and were forgiven. Some say otherwise. The text itself does not say either way.
But Jewish thought is deeply founded on the ideas that no one is more or less prone to sin than anyone else, or ever has been so, and that every person can and will sin because people-- being people-- will inevitably do wrong things from time to time, even if only by accident, because we are all imperfect. And God understands this, since He created us that way; and gave us the process of
teshuvah, and revealed Himself to us as an always forgiving God, because He does not expect perfection of us.