I once worked with a guy I didn't like. When he came on I figured I'd give him a chance. He talked a good game. He seemed like a screw up in some ways, but he was friendly (except for when he was angry and paranoid). He did a couple of things right, but eventually he screwed so many things up that he made life difficult for his coworkers. Things were getting to be a mess and it was going to be some work to clean up.
One day, my manager asked me how I felt about the guy. He was considering letting the guy go. I unintentionally damned him with faint praise. I was on my way out on vacation. When I came back, he was gone.
I didn't feel happy, because we were left with a mess and I had to clean it up. I guess I was somewhat relieved, but the removal of this thorn in my side (in the side of our organization) was not a cause of elation.
That's close to how I am feeling about this administration change. I'm happy about a lot of the differences between Bush and Obama. I'm happy when I hear people who have sat down with Obama and later said that this is a man who cares deeply about motivating people to work together to keep this country great and solve its problems, in contrast to our current president who cared about people agreeing with him more than hearing their opinion.
But Bush's exit was inevitable. It was always on the calendar. And as things have gotten worse, he's left us with so much garbage that it's like having your incompetent coworker fired. You're just sorry the whole thing happened, sorry the damage has been done. It's great when they hire a bright new guy to help get things back on track, but you just want to forget about the numskull who did more harm than good.