Your mistake is the same one the Obama supporters made. That is thinking that there is "one" person who can pull us out of the mess. We live in a democracy, not a dictatorship. If we are going to fix things, it has to be a group effort. We need a group of people, congress and executive branch and maybe even a few citizens, who are willing to come to some sort of consensus and compromise on some key issues. We don't need some hard line conservative, liberal or libertarian coming in and saying its my way or else.
You're right, one person won't pull us out of the mess, and by the same token, I don't think one person can put us completely into a mess either.
And I believe compromise doesn't exist in Washington right now.