Why are Cons so desperate to make Obama look bad?

I'm saying this not only because of the stupid birth certificate conspiracy theory, or the theory he's a Muslim. Although those are the most incoherent beliefs with no empirical proof, I'm also bringing this up because of the democracy Egypt has become. If this was George Bush or Ronald Reagan in office and not Obama, you guys would be taking credit for it. Tyranny was never supported by conservatives up until the defamity of Mubarak. Can somebody please explain the benefit of these "Make Obama Look Bad Out of Sheer Desperation" tactics?