I understand your frustration. I've had my shares of downward spins with Drupal. But like I said, with a cool head and a proper method, upgrading from UC6 to UC7 is almost easy :-) Give yourself a breather and then start by reading UPGRADE.txt 3 to 5 times until you can visualize every step. Then start on a fresh backup of your D6, slowly, one step at a time. This is not a 100 meter race. It's more like a 10,000 meter race, so pace yourself. You can do it!