Darkness on earth, learning experience?

You know I was thinking about it. Maybe God didn't screw up after all with Adam, Eve and sin. I thought we were just a big mistake. But maybe, just maybe we aren't. I was reading an article on relevantmagazine.com, it was about lent, and the author, Kimberlee Conway Ireton, was talking about the dark ages of our lives. I'm going to take this one step further. What if our lives here is one big dark existance, God put us on this earth, so we can learn, feel, and accept things for what they are. We grow. We become stronger people, then when we see Him, not only are we pure in existance, but we have lived through our sins and become real examples of what can be accomplished in a sinful life. Is this what God intended when He designed the garden? He had to know that there was going to be the fall of man, or did He? Either way, it's odd to think that maybe our existances matter, even after life, because no matter what we do, it's to benefit His kingdom, who knows what we are going to see when we get there. There is suppose to be a new earth, a new Jerusalem. Will we have such a happy existance? It's crazy, uncomprehendable, really. All we know is what exists in front of us.