My issues with Fundamental Christianity (1)

As it stands I have a few problems that don't allow me to believe in Christianity. Here is the first one.

1. The Garden of Eden:

    God makes Adam from the mud, then tells him (and Eve hears about it somehow) not to eat of the tree of knowledge of good and evil. Then the serpent (not specified as Satan...) tells Eve she would not die, but that she would be like God, and have the knowledge of good and evil (at this point Eve does NOT have the knowledge of good and evil). So then Eve eats of the tree, and somehow she convinces Adam to eat of it too. So Eve disobeyed God and Adam followed. So God curses them all for their wrong doings (Yet Adam and Eve did not have the knowledge of good and evil...). Then this crasiness happens:

 ²² And Jehovah God said, Behold, the man is become as one of us, to know good and evil; and now, lest he put forth his hand, and take also of the tree of life, and eat, and live for ever- (Genesis 3:22, American Standard Version)

What the hell does that mean?! So to become God all one has to do is have the knowledge of good and evil, and then eat of the tree of life? It just does not make any sense.
So basically Adam and Eve (without the knowledge of good and evil, so like a child?) eat the fruit and get punished. But not only do they get punished, no. This is a lasting punishment. For every man and woman (and serpent) henceforth.