If you hate Bush, you need to hate Obama, or you're simply an unreasonable hypocrite. This isn't up for debate.
I hate neither. Bush was grossly incompetent. Spectacularly incompetent. Dangerously incompetent. Again, Obama is a huge disappointment, but I suspect he, under less grim circumstances, would have been a much better president than he is now. In so many ways, his hands are tied. A president - any president - is limited in his actions to what's legally and politically possible and that severely restricts his actions. Even with his hands tied, Obama is light years ahead of his predecessor.