You're suffering under the common illusion that democracy equals good government. Most of the founding fathers would have disagreed with you. Mugabe is an elected leader, and although he certainly fixed the last couple of elections, he has a great deal of popular support. Even if he were clearly the choice of the majority of people, would that make him a better leader? Of course not.
Why anyone thinks that a mob of largely ignorant, unsophisticated, heavily propagandized, superstitious and primitive people can magically find and elect a set of enlightened leaders, when far more advanced societies have managed to come up with the likes of Hitler, is beyond me.
Democracy is a good system when it leads to individual liberty, but democracy neither guarantees individual liberty, nor is necessarily the most likely system to produce it. Africa would be far better off under a set of benign colonial dictatorships, but I can't see the remotst chance the world will provide them with such.
I'm annoyed that people would rather have a knee-jerk reaction to the very idea of Africans wanting a better system than Mugabe's illegitamate government, than understand that they're trapped in this hell and want out. They are currently being murdered and starved to death for having the courage to vote against Mugabe. I have no problem with a caretaker government that will assist locals in democratic reform.